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Objective Questions
Engineering
Mechanical
ME Set-1
Theory of Machines
253

Theory of Machines MCQ with Answers

253) The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

transverse vibrations

torsional vibrations

longitudinal vibrations

all of these

Answer is:

transverse vibrations

Theory of Machines MCQ with Answers

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Related Theory of Machines MCQ with Answers

255) In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

10 Degree - 15 Degree

15 Degree - 25 Degree

25 Degree - 30 Degree

30 Degree - 40 Degree

Answer is:

25 Degree - 30 Degree

256) A kinematic chain is known as a mechanism when

none of the links is fixed

one of the links is fixed

two of the links are fixed

none of these

Answer is:

one of the links is fixed

257) When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

upward

downward

no where

none of these

Answer is:

downward

258) There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of angular speeds of the driven (F) to the driver (A) of the drive is

1/24

1/8

4/15

12

Answer is:

1/24

Theory of Machines MCQ with Answers

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