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Objective Questions
Engineering
Mechanical
ME Set-1
Theory of Machines
5

Theory of Machines MCQ with Answers

5) In a coupling rod of a locomotive, each of the four pairs is a __________ pair.

sliding

turning

rolling

screw

Answer is:

turning

Theory of Machines MCQ with Answers

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6) If ?/?_n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

0 Degree

90 Degree

180 Degree

360 Degree

Answer is:

180 Degree

7) In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

total lift, total angle of lift, minimum radius of cam and cam speed

radius of circular arc, cam speed, location of centre of circular arc and roller diameter

mass of cam follower linkage, spring stiffness and cam speed

total lift, centre of gravity of the cam and cam speed

Answer is:

total lift, total angle of lift, minimum radius of cam and cam speed

8) When the relation between the controlling force (F_c) and radius of rotation (r) for a spring controlled governor is F_c = ar + b, then the governor will be

stable

unstable

isochronous

none of these

Answer is:

unstable

9) The factor which affects the critical speed of a shaft is

diameter of disc

span of shaft

eccentricity

all of these

Answer is:

all of these

Explanation:

The factor which affects the critical speed of a shaft is
* diameter of disc
* span of shaft
* eccentricity

Theory of Machines MCQ with Answers

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5) In a coupling rod of a locomotive, each of the four pairs is a __________ pair.

turning

Theory of Machines MCQ with Answers

Related Theory of Machines MCQ with Answers

6) If ?/?n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

180 Degree

7) In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

total lift, total angle of lift, minimum radius of cam and cam speed

8) When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

unstable

9) The factor which affects the critical speed of a shaft is

all of these

Theory of Machines MCQ with Answers

6) If ?/?_n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

8) When the relation between the controlling force (F_c) and radius of rotation (r) for a spring controlled governor is F_c = ar + b, then the governor will be