Machine Design MCQ Questions & Answers

1

In unilateral system of tolerance, the tolerance is allowed on

A) Both sides of the actual size B) One side of the actual size C) One side of the nominal size D) Both sides of the nominal size

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Answer & Solution

Answer: Option C

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2

A hollow shaft will transmit a __________ torque than a solid shaft of the same mass and same material.

A) Smaller B) Greater C) Medium D) None of these

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Answer & Solution

Answer: Option B

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3

In worm gears, the angle between the tangent to the pitch helix and an element of the cylinder, is known as

A) Helix angle B) Pressure angle C) Pitch lead angle D) None of these

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Answer & Solution

Answer: Option A

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4

A column is known as a long column if the slenderness ratio is

A) 40 B) 50 C) 70 D) 100

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Answer & Solution

Answer: Option D

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5

Euler’s formula for a mild steel column is not valid if the slenderness ratio is

A) 90 B) 60 C) 120 D) 100

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Answer & Solution

Answer: Option B

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6

The material commonly used for machine tool bodies is

A) Mild steel B) Aluminium C) Brass D) Cast iron

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Answer & Solution

Answer: Option D

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7

When the belt is transmitting maximum power,

A) The tension in tight side is twice the centrifugal tension B) The tension in slack side is equal to the centrifugal tension C) The tension in tight side is thrice the centrifugal tension D) None of the above

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Answer & Solution

Answer: Option A

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8

When a belt drive is transmitting maximum power,

A) Effective tension is equal to centrifugal tension B) Effective tension is half of centrifugal tension C) Driving tension on slack side is equal to centrifugal tension D) Driving tension on tight side is twice the centrifugal tension

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Answer & Solution

Answer: Option D

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9

When a helical compression spring is cut into halves, the stiffness of the resulting spring will be

A) Same B) Double C) One-half D) One-fourth

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Answer & Solution

Answer: Option B

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10

The design of pin of a rocker arm of an I.C. engine is based on

A) Bearing failure B) Shearing failure C) Bending failure D) All of these

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Answer & Solution

Answer: Option D

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Machine Design MCQ Questions & Answers | Mechanical Engineering