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MCQOPTIONS
This section includes 141 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Motion of a square bar in a square hole is an example of- |
| A. | Completely constrained motion |
| B. | Incompletely constrained motion |
| C. | Successfully constrained motion |
| D. | All of the options |
| Answer» B. Incompletely constrained motion | |
| 52. |
How many degrees of freedom does the below mechanism have? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 53. |
. Match List – I with List-II and select the correct answer using the given lists;List - IList – IIA. Compound train1. Hart mechanismB. Quick return mechanism2. Coriolis forceC. Exact straight-line motion3. Transmission of motion around bends and cornersD. Approximate straight-line motion4. Watt mechanism |
| A. | A – 1, B – 2, C – 3, D - 4 |
| B. | A – 3, B – 2, C – 1, D - 4 |
| C. | A – 3, B – 4, C – 1, D - 2 |
| D. | A – 1, B – 4, C – 3, D - 2 |
| Answer» C. A – 3, B – 4, C – 1, D - 2 | |
| 54. |
In a four-bar linkage if ‘S’ is the length of the shortest link, ‘L’ is the length of the longest link and ‘P’ & ‘Q’ are the length of other links, then the criteria for getting a triple rocker mechanism in which no links will fully rotate is. |
| A. | S + Q > P + L |
| B. | S + L < P + Q |
| C. | S + L = P + Q |
| D. | S + L > P + Q |
| Answer» E. | |
| 55. |
A mechanism consists of four links and two lower pairs without any higher pairs then the total degrees of freedom in the mechanism is: |
| A. | 6 |
| B. | 2 |
| C. | 3 |
| D. | 5 |
| Answer» E. | |
| 56. |
In a slider crank mechanism if the crank rotates at uniform speed of 200 rpm and has length of 0.2 m, its linear velocity is: |
| A. | 4.19 m/s |
| B. | 20.9 m/s |
| C. | 5.2 m/s |
| D. | 41.9 m/s |
| Answer» B. 20.9 m/s | |
| 57. |
A planar mechanism has 8 links and 10 rotary joints. The number of degrees of freedom of the mechanism, using Gruebler’s criterion, is |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 58. |
In a crank and slotted lever quick return motion mechanism, the distance between the fixed centres is 200 mm. The length of the driving crank and the slotted bar are 100 mm and 500 mm, respectively. The length of cutting stroke is |
| A. | 100 mm |
| B. | 300 mm |
| C. | 500 mm |
| D. | 700 mm |
| Answer» D. 700 mm | |
| 59. |
In a four-bar linkage, S denotes the shortest link length, L is the longest link length, P and Q are the lengths of other two links. At least one of the three moving links will rotate by 360° if |
| A. | S + L ≤ P + Q |
| B. | S + L > P + Q |
| C. | S + P ≤ L + Q |
| D. | S + P > L + Q |
| Answer» B. S + L > P + Q | |
| 60. |
A link, which is free in space, has degree of freedom equal to |
| A. | 3 |
| B. | 6 |
| C. | 5 |
| D. | 4 |
| Answer» C. 5 | |
| 61. |
Match the following:A. Pantograph1. Slider Crank ChainB. Gnome Engine2. Double Slider Crank Chain C. Scotch Yoke Mechanism3. Quadric Chain |
| A. | A - 1, B - 2, C - 3 |
| B. | A - 2, B - 3, C - 1 |
| C. | A - 1, B - 3, C - 2 |
| D. | A - 3, B - 1, C - 2 |
| Answer» E. | |
| 62. |
A circular shaft is revolving inside the bearing is an example of |
| A. | Sliding pair |
| B. | Turning pair |
| C. | Rolling pair |
| D. | Spherical pair |
| Answer» D. Spherical pair | |
| 63. |
Planar closed kinematic chain is formed with rigid links PQ = 2.0 m, QR = 3.0 m, RS = 2.5 m and SP = 2.7 m with all revolute joints. The link to be fixed to obtain a double rocker (rocker-rocker) mechanism is |
| A. | PQ |
| B. | QR |
| C. | RS |
| D. | SP |
| Answer» D. SP | |
| 64. |
If two links are joined at the same connection, then the joint is known as the- |
| A. | Binary joint |
| B. | Ternary joint |
| C. | Planar joint |
| D. | Quaternary joint |
| Answer» B. Ternary joint | |
| 65. |
Choose the option which does NOT belong to the category of simple machine |
| A. | Spring |
| B. | Screw |
| C. | Wedge |
| D. | Pulley |
| Answer» B. Screw | |
| 66. |
In the coupling rod mechanism of a locomotive, each of the four pairs is a- |
| A. | Sliding pair |
| B. | Rolling pair |
| C. | Screw pair |
| D. | Turning pair |
| Answer» E. | |
| 67. |
How many degrees of rotational freedom exists in a free body in space? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» B. 4 | |
| 68. |
Degree of freedom of structure is |
| A. | 0 |
| B. | 1 |
| C. | Greater than 1 |
| D. | Greater than 2 |
| Answer» B. 1 | |
| 69. |
If the quick return ratio is 1 : 2, then the length of the crank in mm is |
| A. | 250 |
| B. | \(250\sqrt 3 \) |
| C. | 500 |
| D. | \(500\sqrt 3 \) |
| Answer» B. \(250\sqrt 3 \) | |
| 70. |
In a crank and slotted lever quick return motion mechanism, the distance between the fixed centres is 160 mm and the driving crank is 80 mm long. The ratio of time taken by cutting and return strokes is |
| A. | 0.5 |
| B. | 1.0 |
| C. | 1.5 |
| D. | 2.0 |
| Answer» E. | |
| 71. |
In a crank and slotted lever quick-return motion, the distance between the fixed centres is 150 mm and the length of the driving crank is 75 mm. The ratio of the time taken on the cutting and return strokes is |
| A. | 1.5 |
| B. | 2.0 |
| C. | 2.2 |
| D. | 2.93 |
| Answer» C. 2.2 | |
| 72. |
In a first-order lever, which of the following is true? |
| A. | Effort is between Load and Fulcrum |
| B. | Fulcrum is between Effort and Load |
| C. | Load is between Fulcrum and Effort |
| D. | None of the above |
| Answer» C. Load is between Fulcrum and Effort | |
| 73. |
Number of degrees of freedom for the shown figure is |
| A. | 4 |
| B. | 0 |
| C. | 1 |
| D. | 2 |
| Answer» D. 2 | |
| 74. |
In the relation of Kinematic chain, if L.H.S > R.H.S, then the chain is said to be- |
| A. | Locked |
| B. | Constrained |
| C. | Unconstrained |
| D. | Unlocked |
| Answer» B. Constrained | |
| 75. |
If N is the number of link in a mechanism then number of possible inversion is equal to |
| A. | N |
| B. | N - 1 |
| C. | N + 1 |
| D. | N + 2 |
| Answer» B. N - 1 | |
| 76. |
A double – parallelogram mechanism is shown in the figure. Note that PQ is a single link. The mobility of the mechanism is |
| A. | -1 |
| B. | 0 |
| C. | 1 |
| D. | 2 |
| Answer» D. 2 | |
| 77. |
In the slider chain mechanism, which is an inversion of simple engine mechanism, the number of links is- |
| A. | 6 |
| B. | 5 |
| C. | 4 |
| D. | 3 |
| Answer» D. 3 | |
| 78. |
Define a machine in terms of its basic objective. |
| A. | A device to transfer load to source |
| B. | A device to transfer and transform motion and force from source to load. |
| C. | A device to transform force. |
| D. | A device used to transfer force. |
| Answer» C. A device to transform force. | |
| 79. |
DOF of an over-constrained structure has__________ value. |
| A. | zero |
| B. | positive. or negative |
| C. | negative |
| D. | positive |
| Answer» D. positive | |
| 80. |
In a four bar chain mechanism, there are 4 links and 4 turning pairs. If one of the link is fixed, the degree of freedom of mechanism is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» B. 2 | |
| 81. |
Number of links (I) and the number of joints (J) for a single degree of freedom kinematic chain, with only lower pair joints, is related by the expression: |
| A. | J = 2.5l - 2 |
| B. | J = 2.5l - 1 |
| C. | J = 1.5l - 2 |
| D. | J = 1.5l - 1 |
| Answer» D. J = 1.5l - 1 | |
| 82. |
In an IC engine, the connecting rod connects which of the following pair of parts? |
| A. | Piston and crankshaft |
| B. | Cylinder and crankshaft |
| C. | Cylinder and piston |
| D. | None of these |
| Answer» B. Cylinder and crankshaft | |
| 83. |
Kinematic chain is known as mechanism when _________. |
| A. | none of the link is fixed |
| B. | one link is fixed |
| C. | two links are fixed |
| D. | all of the links are fixed |
| Answer» C. two links are fixed | |
| 84. |
If the motion of any of the movable links result in the definite motion of the others, the linkage is known as: |
| A. | locked system |
| B. | mechanism |
| C. | superstructure |
| D. | structure |
| Answer» C. superstructure | |
| 85. |
A man is climbing up a ladder which is resting against a vertical wall. When he was exactly half way up, the ladder started slipping. The path traced by the man is |
| A. | Parabola |
| B. | Hyperbola |
| C. | Ellipse |
| D. | Circle |
| Answer» E. | |
| 86. |
A mechanism has I number of links and j number of binary joints. The degree of freedom (n) of mechanism according to Grubler’s criterion will be given by: |
| A. | n = 2(l – 1) – 2j |
| B. | n = 2(l – 1) – 3j |
| C. | n = 3(l – 1) – 2j |
| D. | n = 3 (l – 1) – 3j |
| Answer» D. n = 3 (l – 1) – 3j | |
| 87. |
Four-bar chain |
| A. | All pair is sliding pair |
| B. | All pair is turning pair |
| C. | One turning pair and rest are sliding pair |
| D. | One sliding pair and rest are turning pair |
| Answer» C. One turning pair and rest are sliding pair | |
| 88. |
A Scott-Russell mechanism consists of- |
| A. | Turning pair only |
| B. | Rotary pair only |
| C. | Sliding and turning pairs |
| D. | Turning and rotary pairs |
| Answer» D. Turning and rotary pairs | |
| 89. |
If the number of constraints is five, then degrees of freedom will be- |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» B. Two | |
| 90. |
A spherical joint has ________ degree (s) of freedom. |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» D. Four | |
| 91. |
How many degrees of freedom exist in a free body in space? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» E. | |
| 92. |
Mobility of a statically indeterminate structure is |
| A. | ≤ -1 |
| B. | 0 |
| C. | 1 |
| D. | ≥ 2 |
| Answer» B. 0 | |
| 93. |
Consider the following statements:I. The degree of freedom for lower kinematic pairs is always equal to one.II. A ball and socket joint has three degrees of freedom and is a higher kinematic pair.III. Oldham’s coupling mechanism has two prismatic pairs and two revolute pairs.Which of the statements given above is/are correct? |
| A. | I, II and III |
| B. | I only |
| C. | II and III |
| D. | III only |
| Answer» E. | |
| 94. |
For the four link mechanism with the dimensions of the links indicated in standard units of length, choose the type of mechanism from the given options |
| A. | crank rocker |
| B. | double crank |
| C. | double rocker |
| D. | rocker |
| Answer» C. double rocker | |
| 95. |
A rigid body moving freely in space has _______ degrees of freedom. |
| A. | 3 |
| B. | 6 |
| C. | 9 |
| D. | 4 |
| Answer» C. 9 | |
| 96. |
In case of a slider crank mechanism, if the mass of slider = 1 kg, crank radius = 10 cm, length of the connecting rod = 40 cm, crank speed = 100 rad/s, then the inertia force at the zero crank angle (from Inner dead center) is equal to: |
| A. | 1250 N |
| B. | 1050 N |
| C. | 1750 N |
| D. | 950 N |
| Answer» B. 1050 N | |
| 97. |
Match the following group-1 items (Kinematic Pairs) with group-2 items (Examples) and select the correct options:1. Revolute pairA.Ball-bearing2.Helical pairB.Ball and socket3.Rolling pairC.Lathe spindle in the headstock4.Globular pairD.Motion between the bolt and fixed nut |
| A. | 1-D, 2-A, 3-C, 4-B |
| B. | 1-B, 2-D, 3-A, 4-C |
| C. | 1-C, 2-D, 3-A, 4-B |
| D. | 1-A, 2-C, 3-D, 4-B |
| Answer» D. 1-A, 2-C, 3-D, 4-B | |
| 98. |
An unrestrained rigid body in space possesses ______ degrees of freedom. |
| A. | Three |
| B. | Four |
| C. | Five |
| D. | Six |
| Answer» E. | |
| 99. |
Which among the following involves designing of machine components concerning its shape and size? |
| A. | Kinetics |
| B. | Kinematics |
| C. | Synthesis |
| D. | All of the above |
| Answer» D. All of the above | |
| 100. |
Relative motion between links is more than one direction which is unpredictable is known as |
| A. | completely constrained motion |
| B. | incompletely constrained motion |
| C. | successfully constrained motion |
| D. | none of the above |
| Answer» C. successfully constrained motion | |