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Objective Questions
Engineering
Mechanical
ME Set-1
Theory of Machines
282

Theory of Machines MCQ with Answers

282) A system of masses rotating in different parallel planes is in dynamic balance if the

resultance force is equal to zero

resultant couple is equal to zero

resultant force and resultant couple are both equal to zero

resultant force is numerically equal to the resultant couple, but neither of them need necessarily be zero

Answer is:

resultant force and resultant couple are both equal to zero

Theory of Machines MCQ with Answers

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284) The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

dedendum

addendum

clearance

working depth

Answer is:

clearance

285) A simple spring-mass vibrating system has a natural frequency of f_n. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

f_n/2

2 f_n

4 f_n

8 f_n

Answer is:

f_n/2

286) The axis of precession is __________ to the plane in which the axis of spin is going to rotate.

parallel

perpendicular

angular

none of these

Answer is:

perpendicular

287) Bifilar suspension method is used to find the

angular acceleration of the body

moment of inertia of the body

periodic time of the body

frequency of vibration of the body

Answer is:

moment of inertia of the body

Theory of Machines MCQ with Answers

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282) A system of masses rotating in different parallel planes is in dynamic balance if the

resultant force and resultant couple are both equal to zero

Theory of Machines MCQ with Answers

Related Theory of Machines MCQ with Answers

284) The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

clearance

285) A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

fn/2

286) The axis of precession is __________ to the plane in which the axis of spin is going to rotate.

perpendicular

287) Bifilar suspension method is used to find the

moment of inertia of the body

Theory of Machines MCQ with Answers

285) A simple spring-mass vibrating system has a natural frequency of f_n. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

f_n/2