MCQ for Unit 1 BY PROF R S

MCQ for Unit 1 BY, PROF. R. S. CHAUDHARI. ASST. PROFESSOR MECHANICAL ENGINEERING DEPARTMENT

1. ____ is a device which receives a. b. c. d. energy in some available form and utilizes it to do some particular type of work. Mechanism Machine Both (a) and (b) None of the above

� 2. ____ is a device which consists of fixed and moving parts that modifies energy and transmits it in a useful form. a. Mechanism b. Machine c. Both (a) and (b) d. None of the above

3. ____ includes the study of motions a. b. c. d. and forces concerning different parts of an existing mechanism. Analysis Synthesis Both (a) and (b) None of them

� 4. _____ includes the design of different parts of mechanism. a. Analysis b. Synthesis c. Both (a) and (b) d. None of the above

5. Which of the following statement is a. b. c. d. correct? Machine and mechanism are same Machine is a part of mechanism Mechanism is a part of machine None of the above

� 6. a. b. c. d. _____ is the branch of mechanism concerned with physical system that are in static equilibrium. Kinetics Kinematics Statics All of the above

� 7. _____ is the branch of mechanics concerned with motion, without considering the effect of force or mass. a. Kinetics b. Kinematics c. Statics d. All of the above

8. _____ a. b. c. d. is the branch of mechanics concerned with forces (including mass effect) that causes motion of a body. Kinetics Kinematics Statics All of the above

10. The body which do not suffer appreciable a. b. c. d. distortion or change in physical form by the forces acting on them is called as ______. Rigid box Resistant body Both (a) and (b) None of the above

9. Kinematics link is also called as _____. a. Kinematics pair b. Structure c. Element d. Kinematics chain

11. _____is the resistant body. a. Spring b. Belt c. Fluid used in hydraulic press d. All of the above

12. _____is a resistant body which become a a. b. c. d. part of a machine connecting other parts which have motion relative to it. Joint Kinematic pair Link All of the above

13. _____ is the type of kinematic link. a. Rigid link b. Flexible link c. Fluid link d. All of the above

� 14. a. b. c. d. _____ does not undergo an appreciable deformation while transmitting motion and forces. Rigid link Flexible link Fluid link All of the above

15. _____ partly deforms in such a way that a. b. c. d. � they do not affect the required transmission of motion. Rigid link Flexible link Fluid link All of the above

16. _____ transmits the motion by fluid a. b. c. d. pressure or compression. Rigid link Flexible link Fluid link All of the above

� 17. Belt, rope and chain are examples of a. b. c. d. _____. Rigid link Flexible link Fluid link All of the above

18. Fluid used in hydraulic jacks, hydraulic a. b. c. d. press and brakes is _____. Rigid link Flexible link Fluid link All of the above

� 19. Crank and connecting rod of IC engine are _____. a. Rigid link b. Flexible link c. Fluid link d. All of the above

� 20. _____ is an assemblage of resistant bodies which have no relative motion between them a. Machine b. Structure c. Joint d. Pair

� 21 The purpose of link is to. . . . . � a) transmit motion � b) guide other link � c) act as a support � d)all of these

�Q. 22 Piston from a single slider crank kinematic chain is a. . . . link �a) binary �b) ternary �c) quaternary �d) fluid

�Q. 23. . . link can transmit only compressive force. � a) Rigid � b) Flexible � c) Fluid � d) Both a and b

�Q. 24 Slotted disk from double slider kinematic chain is a. . . link �a) Binary �b) ternary �c) Quaternary �d) Flexible

�Q. 25 Track rod of ‘David steering gear mechanism’ is a. . . . link. �a) Binary �b) Ternary �c) Quaternary �d) Fluid

� 26 Link of a mechanism should be. . . . �a)Rigid �b)Resistance �c) Separate part �d) all of these

�Q. 27 The link of a structure transmit . . . . �a) Forces only �b) Motion only �c) Forces and Motion �d) None of above

�Q. 28 The link of machine may transmit . . . . �a) force only �b) Motion only �c)Forces and Motion �d) None of above

�Q. 29 Hydraulic press is. . . . �a) Rigid link � b) Flexible link � c) Fluid link � d) None of above

�Q. 30 The motion of a bar with rectangular cross section, sliding in corresponding rectangular slot is a example of. . . �a)Successfully constrained motion �b) un-constrained motion �c) incompletely constrained motion � d) completely constrained motion

�Q. 31 Piston and cylinder pair from an IC engine is an example of. . . �a) completely constrained motion �b) un-constrained motion � c) Normally constrained motion �d) Successfully constrained motion

�Q. 32 The rectilinear motion of a piston is converted into rotary by. . . �a) Crank � b) Piston rod �c) Connecting rod � d) Cross head

�Q. 33 The motion of a piston in the cylinder is an example of. . . . . �a) completely constrained motion �b) incompletely constrained motion � c) Successfully constrained motion � d)None of these

�Q. 34 The motion of shaft in a circular hole is an example of. . . . . �a) incompletely constrained motion �b) completely constrained motion �c) Successfully constrained motion � d) None of above

�Q. 35 A round bar passes through the cylindrical hole. Which one of the following statement is correct in this regard. �a) The two links shown from a kinematic pair �b) The pair is completely constrained �c) The pair has in completely constraint �d) The pair is successfully constrained

�Q. 36 Consider the following statements out of these statements which is correct. � 1) A round bar in a round hole form a turning pair. � 2) A square bar in a square hole form a sliding pair. � 3) a vertical shaft in a foot step bearing forms a successful constraint. �a)1 and 2 correct �b)2 and 3 correct �c)1 and 3 correct �d)1, 2 and 3 correct

�Q. 37 A circular bar in a round hole is an example of. . . . �a) incompletely constrained motion � b) completely constrained motion �c) Successfully constrained motion �d) None of above

�Q. 38 If some links are connected such that motion between them can take place in more than one direction, it is called. . . . �a) incompletely constrained motion � b) completely constrained motion � c) Successfully constrained motion �d) None of above

�Q. 39 A completely constrained motion can be transmitted with. . . . . �a) 1 link with pin joints �b ) 2 link with pin joints �c) 3 link with pin joints �d) 4 link with pin joints

�Q. 40 Rectangular bar in a rectangular hole is the following type of motion. � a) incompletely constrained motion � b) completely constrained motion � c) Successfully constrained motion �d) frrely

� 41)A foot step bearing and rotor of vertical turbine form examples of � a)incompletely constrained motion � b)partially constrained motion � c)completely constrained motion � d)successfully constrained motion

� 42)Which of the following is an example of completely constrained motion? � a)Rotor and vertical turbine � b)A foot step bearing � c)A shaft with collars at each end rotating in a round hole � d)A circular bar moving in a round hole

� 43)The motion of a rotating shaft in a foot step bearing constitutes between the elements of kinematic pair � a)successfully constrained motion � b)completely constrained motion � c)incompletely constrained motion d)None of the above

� 44)The motion of circular shaft with collars at each end rotating in a round hole constitutes between the elements of kinematic pair � a)successfully constrained motion � b)completely constrained motion � c)incompletely constrained motion d)None of the above

� 45)The motion of a piston in cylinder of a steam engine is an example of � a)successfully constrained motion b)completely constrained motion � c)incompletely constrained motion � d)None of the above

� 46)The motion of circular shaft in a circular hole constitutes between the elements of kinematic pair � a)successfully constrained motion � b)completely constrained motion � c)incompletely constrained motion � d)None of the above

� 47)Kinematic pairs are those which have � a)point or line contact between the two elements when in motion � b)surface contact between the two elements when in motion � c)elements of pairs not held together mechanically � d)two elements that permit relative motion

� 48)Kinematic pair is formed by a)connecting rigidly two elements � b)connecting not more than two elements permitting relative motion � c) connecting two or more elements permitting relative motion � d) two or more elements without relative motion �

� 49)The elements or links which are connected together in such way that their relative motion is the completely constrained , form a � a)Kinematic pair � b)machine � c)mechanism � d)kinematic chain

� 50)Joint of two elements that permits relative motion which is completely constrained or successfully constrained is called � a) mechanism � b) machine � c)structure � d) Kinematic pair

� 51)Spherical pair is a -----pair � a)higher � b)lower �c)open � d)constrained

� 52)Screw pair has---- no. of degree of freedom � a)1 � b)2 �c)3 � d)4

� 53)Which of the following is turning pair � a)Piston and cylinder of a reciprocating steam engine � b)Shaft with collar at both ends fitted in circular hole � c)Lead screw of a lathe with nut � d)Ball and socket joint

� 54)The lead screw of lathe with nuts forms a � a)sliding pair � b)rolling pair � c)helical pair � d)turning pair

� 55)A screw pair with zero pitch can be called as � a)Cylindrical or revolute pair �B. Prismatic pair � c)Spherical pair � d)Sliding pair

� 56)The type of constrained in a cylindrical pair is � a)Incomplete � b)Complete � c)Successful � d)Both (b)and(c)

� 57)Two links that permits relative motion which is either Complete constrained or Successfully constrained is called � a) mechanism � b) machine � c)structure � d) Kinematic pair

� 58)Classification of kinematic pair based upon � a)Nature of contact between the links � b)Nature of relative motion between the links � c) Nature of mechanical arrangement for constraint between elements � d)All of the above

� 59)A ball and socket joint forms------ a)rolling pair � b)Spherical pair � c)Turning pair � d)none of these �

� 60)The bolt and nut forms---� a) Turning pair � b) rolling pair � � c)Screw pair d)Sliding pair

�Q. 61 In case of lower pair the contact between two links while transmitting motion is. . . �A)SURFACE CONTACT � B)Line contact �C)Point contact � D)surface and line contact

�Q. 62 Choose the higher pairs from . . . �A)Toothed gears in mesh �B) Roller bearings �C)cam and follower � D) ALL OF THE ABOVE

�Q. 63 A Shaft revolving in a bearing forms a. . �A)Higher pair � B)sliding pair �C)LOWER PAIR � D)Turning pair

�Q. 64 The balls with its bearing forms a . . �A)Turning pair � B)Screw pair �C)ROLLING PAIR �D) Spherical pair

�Q. 65 When the elements of the pair are kept is connected by the action of external forces. The pair is said to be a. . . �A)Higher pair �B)Lower pair � C)FORCE CLOSED PAIR � D) self closed pair

�Q. 66 Higher pairs have got. . . �A)Surface contact �B)Larger height �C)LINE CONTACT � D) Large weight

�Q. 67 Which one of the following is a higher pair? �A)ROLLING PAIR �B)Screw pair �C)Sliding pair � D) Spherical pair

�Q. 68 Roller bearings have got. . . . �A)Line contact �B)POINT CONTACT �C) Surface contact �D) None of the above

�Q. 69 Kinematic pairs are classified as . . . �A)Sliding pair �B)Rolling pair � C)Spherical pair � D)ALL OF THE ABOVE

�Q. 70 Piston and cylinder of a reciprocating steam engine forms a. . . . �A)Turning pair �B)Rolling pair �C)SLIDING PAIR � D) Spherical pair

�Q. 71 A ball and a socket joint form a . . . . �A)Turning pair �B)Rolling pair � C)Sliding pair � D)SPHERICAL PAIR

�Q. 72 Circular shaft fitted into a circular hole with collars at both ends forms a. . �A)TURNING PAIR �B)Rolling pair �C)Sliding pair � D)Spherical pair

�Q. 73 When the two elements of a pair have a surface contact when in motion and the surface of one element slides over the surface of the other element, the pair formed is called a. . �A)Higher pair �B) LOWER PAIR �C)Force-closed pair �D) None of the above

�Q. 74 When the two elements of a pair have line or point contact when in motion, the pair formed is called a. . �A)HIGHER PAIR �B)Lower pair �C)Unclosed pair � D)None of the above

�Q. 75 The lower pair. . . . �A)Closed pair �B)Unclosed pair �C)Surface contact pair �D)BOTH A) & C)

�Q. 76 The higher pair. . . . �A)Closed pair �B)Unclosed pair �C)Point contact pair �D)BOTH A)&C)

�Q. 77 Which one of the following is a lower pair ? �A)Ball and roller bearing �B)AUTOMOBILE STEERING GEAR �C)Cam and follower �D)Belt and chain drives

�Q. 78 which of the following is a higher pair ? �A)Ball and roller bearing � B)Belt and chain drives �C) Cam and follower �D) ALL OF THE ABOVE

�Q. 79 Choose the correct statement. �A) A sliding pair has incompletely constrained motion �B) A pair of friction discs constitutes a lower pair �C) RECTILINEAR MOTION OF A PISTON IS CONVERTED INTO ROTARY MOTION BY SLIDER CRANK MECHANISM �D) Automobile steering gear is an example iof higher pair

�Q. 80 Choose the wrong statement. �A) An element needs not be a rigid body, but it must be a resistant body. �B)CAM AND FOLLOWER IS AN EXAMPLE OF THE LOWER PAIR �C)A sliding pair has a completely constrained motion. �D) The motion of a shaft in a circular hole is an example of incompletely constrained motion. �

�Q. 81 The type of pair by two elements which are so connected that one is constrained to turn or revolve about fixed axis of another element is known as ____. �(a) turning pair �(b) rolling pair �(c) sliding pair �(d) spherical pair

�Q. 82 Which of the following is lower pair____. �(a) ball & socket �(b) piston & cylinder �(c) cam & follower �(d) both (a) & (b)

�Q. 83 The example of lower pair ____. �(a) shaft revolving in a bearing �(b) straight line motion mechanisms �(c) automobile steering gear �(d) all of above

�Q. 84 Pulley in belt drive acts as_______. �(a) cylinder pair �(b) turning pair �(c) rolling pair �(d) sliding pair

�Q. 85 The example of rolling pair____. �(a) bolt and nut �(b) lead screw of lathe �(c) ball and socket joint �(d) ball bearing and roller bearing

�. 86 A universal joint is example of_____. �(a) higher pair �(b) lower pair �(c) rolling pair �(d) sliding pair

�Q. 87 The example of spherical pair is____. �(a) bolt and nut �(b) lead screw of lathe �(c) ball and socket joint �(d) ball bearing and roller bearing

�Q. 88 Cross head and guide form_______. �(a) higher pair �(b) turning pair �(c) rolling pair �(d) sliding pair

�Q. 89 kinematic pairs are those which have two elements that_______. �(a) have line contact �(b) have surface contact �(c) permit relative motion �(d) are held together

�Q. 90 The lower pair is_______. �(a) open pair �(b) closed pair �(c) point contact pair �(d) does not exist

�Q. 91 Automobile steering gear is an example of_______. �(a) higher pair �(b) sliding pair �(c) turning pair �(d) lower pair

�Q. 92 In higher pair, the relative motion is____. �(a) purely turning �(b) purely sliding �(c) purely rotary �(d) combination of sliding and turning

�Q. 93 Which of the following has sliding motion ? �(a) crank �(b) connecting rod �(c) crank pin �(d) cross head

�Q. 94 Which of the following mechanism is obtained from lower pair ? �(a) pantograph �(b) valve and valve gears �(c) generated straight line motions �(d) all of above

�Q. 95 Elements of pairs held together mechanically is known as_______. �(a) closed pair �(b) open pair �(c) mechanical pair �(d) rolling pair

�Q. 96 Shaft revolving in a bearing is the following type of pair. �(a) lower pair �(b) higher pair �(c) spherical pair �(d) cylindrical pair

�Q. 97 A slider crank chain consists of following numbers of turning and sliding pairs. �(a) 1, 3 �(b) 2, 2 �(c) 3, 1 �(d) 4, 0

�Q. 98 Lower pairs are those which have_______. �(a) point or line contact between the two elements when in motion �(b) surface contact between the two elements when in motion �(c) elements of pairs not held together mechanically �(d) two elements that permit relative motion

�Q. 99 Higher pairs are those which have______. �(a) point or line contact between the two elements when in motion �(b) surface contact between the two elements when in motion �(c) elements of pairs not held together mechanically �(d) two elements that permit relative motion

�Q. 100 open pairs are those which have_______. �(a) point or line contact between the two elements when in motion �(b) surface contact between the two elements when in motion �(c) elements of pairs not held together mechanically �(d) two elements that permit relative motion

�Q. 101 the main disadvantages of the sliding pair is that it is ……… � (a) bulky � (b) wears rapidly � (c) difficult to manufacture � (d) both (a) &(b)

�Q. 102 A kinematic pair of joint of………. . � (a) two links are fixed � (b) two links having same velocity � (c) two links having relative motion between them � (d) nine of above

�Q. 103 In a pen stand mechanism a ball and socket joint forms a………. . � (a) turning pair � (b) rolling pair � (c) sliding pair � (d) spherical pair

�Q. 104 balls in bearing with casing forms a …………. � (a) turning pair � (b) rolling pair � (c) sliding pair � (d) spherical pair

�Q. 105 when the two element of pair have a surface contact when in motion are surface element slides other the element then formed is called a ………. � (a) higher pair � (b) lower pair � (c) forced closed pair � (d) nine of the above

�Q. 106 kinematic pairs are those which have………. . � (a) two element that permit relative motion �(b) paired element held together mechanically �(c) pairs element having line contact or surface contact �(d) all of above

�Q. 107 when the two element have point or line contact motion the pair so form known as……. . � (a) higher pair � (b) lower pair � (c) screw pair � (d) closed pair

�Q. 108 when the element of the pair are kept is contact the pair is said to be a …… � (a) higher pair � (b) lower pair � (c) self closed pair � (d) force closed pair

�Q. 109 which of the following is turning pair ……… � (a) piston and cylinder of a reciprocating stem engine � (b) shaft with collars at both end fitted in a circular hole � (c) lead screw of a lathe with nut � (d) ball and socket joint

�Q. 110 in kinematic pair when the element have surface contact while motion it is a…… � (a) higher pair � (b) lower pair � (c) unclosed pair � (d) closed pair

�Q. 111 kinematic pairs are classified on the basis of …. . � (a) nature of relative motion between the element � (b) nature of contact between the element � (c) nature of mechanical arrangement for constraint between element �(d) all of above

�Q. 112 classification of kinematic pairs on relative motion between element between may give � � (a) slider pair (b) turning pair (c) rolling pair (d) all of above

�Q. 113 various kinematic pair are given below. choose the lower pair � (a) rolling pair � (b) tooth gear in meshing � (c) cam & follower � (d) crank shaft and bearing

�Q. 114 various kinematic pair are given below. choose the higher pair � (a) rolling pair � (b) tooth gear in meshing � (c) cam & follower � (d) all of above

�Q. 115 choose the correct statement. (a) tooth gear in mesh constitute a higher kinematic pair � (b) belt on pulley drive constitute a higher kinematic pair � (c) chain & spocket drive constitute a higher kinematic pair � (d) all of above �

�Q. 116 in a four bar chain or quadratic cycle chain………. � (a) each of the four pairs is a turning pair � (b) one is turning pair and three are sliding pair � (c) three are turning pairs and one is sliding pair � (d) each of the four pairs is a sliding pair

�Q. 117 a kinematic chain is…. . (a) in a combination of kinematic pair in which one link is fixed � (b) in a combination of kinematic pair in which each link forms put of two pair and the relative motion between the links is completely constrained. � (c) the same as mechanism � (d) also called inversion �

�Q. 118 a kinematic chain is…. . (a) comprise a chain of link in space with constrained motion � (b) comprise a chain of link with at least one link fixed and completely constrained motion � (c) comprise a chain of link with at least one link fixed and successfully constrained motion � (d) comprise a chain of link with incompletely constrained motion �

�Q. 119 a combination of kinematic pair joined in a such a way that the relative motion between the links is constrained is called a � (a) structure � (b) mechanism � (c) kinematic chain � (d) inversion

�Q. 120 in a kinematic chain having constrained motion the minimum of kinematic pair required are…. � (a) two � (b) three � (c) four � (d) five

�Q. 121 The relation between the number of links (n) and the number of joint (j) to form chain is given by the equation ……. �(a) j=2/3(n+2) �(b) j=1/2(n+2)+2 �(c) j=(n+2)-n/2 �(d) j=3/2(n-2) kinematic

�Q. 122 relationship between the number of links (n) and number of pairs (P) is………. . � (a) p=2 n-4 � (b) p=n/2+4 � (c) p=n/2+2 � (d) p=2 n-2

�Q. 123 a kinematic chain requires minimum of …………. � (a) 3 links and 3 turning pairs � (b) 4 links and 5 turning pairs � (c) 4 links and 4 turning pairs � (d) 4 links and 3 sliding pairs

�Q. 124 the equation between the number of links (n) and number of joint (j) with lower pairs is Given as, n=2/3(j+2). If this relation is applied to chain constituted by higher pairs then… �Each higher pair must be taken equivalent to two lower pairs and one additional link. �Each higher pair must be then equivalent to two lower pairs. � Each higher pair must be take as one lower pair and additional link. �Each higher pair must be take as two lower pair and additional link. �

�Q. 125 a kinematic chain with 7 joint need the following number of link. � (a) 4 � (b) 6 � (c) 9 � (d) 12

�Q. 126 choose wrong statement. (a) a chain consisting of four links with four joint is called as kinematic chain. � (b) a chain consisting of three links with three joint is called as locked chain. � (c) quaternary joint is eqvalant to three binary joint. � (d) rectangular bar in a rectangular hole is the example of income constrained motion. �

�Q. 127 In a kinematic chain , if the specification of one co-ordinate , or dimension position of a Single link is sufficient to define the position o 0 f a single link is sufficient to define the Position of all other link the chain is called a kinematic chain of …………. . �a. Two degree of freedom �b. One degree of freedom �c. Three degree freedom �d. None of the above

�Q. 128 if j=number of binary joint in a chain H=number or unclosed pair n=number of link , then To determine whether a chain is a locked , constrained or unconstrained , the relation used Is given by………. . �a. J+H=3/2(n-2) �b. J+H=3 n-2 �c. J+H/2=3/2(n-2) �d. j/2+H=3/2(n+2)

�Q. 129 if the right hand side of the equation (which is used to determine whether a chain is locked , constrained or unconstrained ) is greater then the left hand side then the chain is ………. � (a) locked � (b) Constrained � (c) Unconstrained � (d) None of the above

�Q. 130 if R. H. S=L. H. S of the equation (which is used to determine whether a chain is locked , constrained or unconstrained ) then the chain………… � (a) Locked � (b) Constrained � (c) Unconstrained � (d) None of the above

�Q. 131 if R. H. S is less than L. H. S. of the equation (which is used to determine whether a chain is locked , constrained or unconstrained) then the chain is……… � (a) Locked � (b) Constrained � (c) Unconstrained � (d) None of the above

�Q. 132 The relation between the number of links (l) and the number of binary joints (j) for the Kinematic chain having constrained motion is given by j=(3/2)*l-2. If the left hand side of this equation is greater than the right hand side, then the chain is………. �(a) Locked chain �(b) completely constrained chain �(c) successfully constrained chain �(d) incompletely constrained chain

Q. 133 The equation for criterion of constraint for kinematic chain having plane motion Is given by 2 J+H=3 n-4. If L. H. S. of equation is greater than R. H. S. then………. � (a) Locked chain �(b) completely constrained chain �(c) successfully constrained chain �(d) incompletely constrained chain �

�Q. 134 The equation for criterion of constraint for kinematic chain having plane motion. Is given by 2 J+H=3 n-4. If L. H. S. of equation is less than R. H. S. then………. � (a) Locked chain �(b) completely constrained chain �(c) successfully constrained chain �(d) incompletely constrained chain

Q. 135 The equation for criterion of constraint for kinematic chain having plane motion �Is given by 2 J+H=3 n-4. If L. H. S. of equation is equal to R. H. S. then………. � (a) Locked chain �(b) completely constrained chain �(c) successfully constrained chain �(d) incompletely constrained chain �

�Q. 136 Ternary is the joint at which , three links are joined at same connection. It is equivalent to…………. �A. One binary joint �B. Two binary joint �C. Three binary joint �D. Combination of (a) & (b)

�Q. 137 Quaternary is the joint at which , three links are joined at same connection. It is equivalent to…………. �A. One binary joint �B. Two binary joint �C. Three binary joint �D. Combination of (a) & (b)