⚙️ Theory of Machines MCQ Questions and Answers with Live Score

Practice 100+ important Theory of Machines MCQs with answers, covering mechanisms, kinematics, dynamics, gears, cams, and flywheels

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⚙️ Theory of Machines MCQ Questions and Answers (1–100)

These MCQ questions cover key concepts of Theory of Machines including mechanisms, kinematics of motion, velocity and acceleration analysis, gears, cams, flywheels, governors, and balancing. These questions are highly important for GATE, IES, SSC JE, RRB, and other Mechanical Engineering exams.

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Question 1: Which inversion of a four-bar chain is used in a beam engine?

Question 2: The degree of freedom of a planar mechanism is given by which relation?

Question 3: Which of the following is a higher pair?

Question 4: Coriolis acceleration is present when?

Question 5: Instantaneous center is a point where?

Question 6: Which gear is used for parallel shafts?

Question 7: The minimum number of teeth to avoid interference for 20° involute gear is?

Question 8: Function of a flywheel is to?

Question 9: Which mechanism produces intermittent motion?

Question 10: Pressure angle in cam should be?

Question 11: In simple harmonic motion cam, acceleration is?

Question 12: Grashof’s law is related to?

Question 13: Which governor is most sensitive?

Question 14: The pitch circle is?

Question 15: Balancing is required to?

Question 15: In a four-bar mechanism satisfying Grashof’s law, which condition ensures at least one link can make a complete revolution relative to others?

Question 16: In a slider-crank mechanism, how does the ratio of connecting rod length to crank radius affect the motion of the piston?

Question 17: When two gears are in mesh, what ensures constant velocity ratio during power transmission?

Question 18: In cam-follower systems, what is the main disadvantage of a large pressure angle?

Question 19: In a mechanism, under what condition does a link experience pure translation?

Question 20: In balancing of rotating masses, what is the condition for complete balance in a single plane?

Question 21: In gear trains, what is the primary advantage of using compound gears?

Question 22: In a cam with uniform acceleration and retardation, what is the nature of velocity diagram?

Question 23: In the analysis of mechanisms, what is Kennedy’s theorem used for?

Question 24: In a governor, what is meant by isochronism?

Question 25: In flywheel design, what does coefficient of fluctuation of speed represent?

Question 26: In involute gears, why is the velocity ratio independent of center distance?

Question 27: In a cam follower with offset, what is the effect of offset?

Question 28: In a four-bar chain, when the shortest link is fixed, what type of mechanism is formed?

Question 29: In dynamic balancing, what condition ensures complete balance of rotating masses in different planes?

Question 30: In a gear train, what is the effect of idler gear on velocity ratio?

Question 31: In a cam mechanism, which motion gives minimum jerk?

Question 32: In a governor, sensitivity is defined as?

Question 33: In gear terminology, backlash is required to?

Question 34: In a slider crank mechanism, maximum velocity of piston occurs when?

Question 35: In balancing of reciprocating masses, primary unbalanced force varies as?

Question 36: Secondary unbalanced force varies as?

Question 37: In a four-bar mechanism, toggle position occurs when?

Question 38: In a cam, dwell period refers to?

Question 39: In epicyclic gear trains, the arm is also known as?

Question 40: In a governor, hunting is caused by?

Question 41: In a flywheel, maximum fluctuation of energy depends on?

Question 42: In involute gears, interference occurs when?

Question 43: In cam design, jerk is defined as?

Question 44: In a slider crank, dead center position occurs when?

Question 45: In gear trains, compound gear trains are used when?

Question 46: In governors, stability means?

Question 47: In a cam, base circle is?

Question 48: In balancing, static balancing requires?

Question 49: In a mechanism, kinematic pair is defined as?

Question 50: In a four-bar chain, if shortest link is adjacent to fixed link, mechanism formed is?

Question 51: In a four-bar mechanism operating near its toggle position, what happens to the mechanical advantage?

Question 52: In a slider-crank mechanism, the ratio of maximum to minimum angular velocity of the crank under fluctuating torque is governed primarily by?

Question 53: For a mechanism to have constrained motion, which condition must be satisfied?

Question 54: In an epicyclic gear train, if the arm is fixed, the system behaves as?

Question 55: In cam design, which follower motion minimizes both acceleration and jerk simultaneously?

Question 56: In dynamic balancing of several masses in different planes, what is the necessary and sufficient condition?

Question 57: In involute gear profiles, contact between mating teeth occurs along?

Question 58: In a governor, the term ‘effort’ refers to?

Question 59: In a four-bar mechanism, if the sum of shortest and longest links is greater than the sum of the other two, the mechanism is classified as?

Question 60: In a cam-follower system, what is the primary cause of follower jump?

Question 61: In a flywheel, the turning moment diagram is used to determine?

Question 62: In a gear train, the velocity ratio depends on?

Question 63: In the analysis of reciprocating engines, inertia force is maximum when?

Question 64: In a mechanism, the number of instantaneous centers for n links is given by?

Question 65: In cam design, the base circle radius affects?

Question 66: In a governor, the controlling force curve represents?

Question 67: In balancing of reciprocating masses, complete balancing is not possible because?

Question 68: In epicyclic gear trains, what is the main advantage?

Question 69: In a cam mechanism, which parameter directly affects the contact stress?

Question 70: In a four-bar mechanism, coupler curve is generated by?

Question 71: In a governor, stability requires that?

Question 72: In a gear tooth, addendum is defined as?

Question 73: In flywheel design, mass moment of inertia is proportional to?

Question 74: In cam follower motion, undercutting occurs when?

Question 75: In a mechanism, if the number of links is 6, total instantaneous centers are?

Question 76: In a slider-crank mechanism, the ratio of time of forward stroke to return stroke deviates from unity due to?

Question 77: In a cam with roller follower, the pitch curve is defined as?

Question 78: In a four-bar mechanism, branch defect occurs when?

Question 79: In involute gears, the base circle radius is given by?

Question 80: In a governor, the term ‘power of governor’ refers to?

Question 81: In balancing of multi-cylinder engines, primary forces can be completely balanced when?

Question 82: In a gear pair, contact ratio is defined as?

Question 83: In cam design, pressure angle becomes maximum when follower is?

Question 84: In a mechanism, inversion is obtained by?

Question 85: In a flywheel, the maximum fluctuation of energy is equal to?

Question 86: In epicyclic gear trains, the relative velocity method is based on?

Question 87: In a four-bar chain, circuit defect occurs when?

Question 88: In a governor, equilibrium speed is the speed at which?

Question 89: In a cam follower system, offset follower helps to?

Question 90: In gear terminology, module is defined as?

Question 91: In a slider crank, maximum acceleration occurs at?

Question 92: In balancing, the condition for static balance is?

Question 93: In a cam, the term ‘prime circle’ refers to?

Question 94: In a governor, sleeve lift is directly proportional to?

Question 95: In a four-bar mechanism, when all links are equal, the mechanism behaves as?

Question 96: In gear trains, reverted gear train condition is satisfied when?

Question 97: In cam design, follower acceleration is minimum for?

Question 98: In a governor, insensitiveness is caused due to?

Question 99: In a mechanism, the degree of constraint is determined by?

Question 100: In flywheel design, coefficient of fluctuation of energy is defined as?

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⚙️ Theory of Machines MCQ Questions and Answers with Live Score

⚙️ Theory of Machines MCQ Questions and Answers (1–100)

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