Machine Design MCQ Questions & Answers

11

The largest diameter of an external or internal screw thread is known as

A) Minor diameter B) Major diameter C) Pitch diameter D) None of these

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Answer & Solution

Answer: Option B

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12

The smallest diameter of an external or internal screw thread is known as

A) Minor diameter B) Major diameter C) Pitch diameter D) None of these

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Answer & Solution

Answer: Option A

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13

When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where $${\tau _{\text{u}}}$$ = Ultimate shear strength of the material of the plate)

A) $${\text{dt}}{\tau _{\text{u}}}$$ B) $$\pi {\text{dt}}{\tau _{\text{u}}}$$ C) $$\frac{\pi }{4} \times {{\text{d}}^2}{\tau _{\text{u}}}$$ D) $$\frac{\pi }{4} \times {{\text{d}}^2} \times {\text{t}}{\tau _{\text{u}}}$$

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Answer & Solution

Answer: Option B

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14

The algebraic difference between the maximum limit and the basic size is called

A) Lower deviation B) Upper deviation C) Actual deviation D) Mean deviation

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Answer & Solution

Answer: Option B

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15

Which of the following spring is used in mechanical wrist watch?

A) Helical compression spring B) Spiral spring C) Torsion spring D) Belleville spring

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Answer & Solution

Answer: Option C

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16

The elasticity is the property of a material which enables it to

A) Regains its original shape after deformation when the external forces are removed B) Draw into wires by the application of a tensile force C) Resists fracture due to high impact loads D) Retain deformation produced under load permanently

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Answer & Solution

Answer: Option A

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17

The plasticity is the property of a material which enables it to

A) Regain its original shape after deformation when the external forces are removed B) Draw into wires by the application of a tensile force C) Resist fracture due to high impact loads D) Retain deformation produced under load permanently

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Answer & Solution

Answer: Option D

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18

Taper usually provided on cotter is

A) 1 in 5 B) 1 in 10 C) 1 in 24 D) 1 in 40

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Answer & Solution

Answer: Option C

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19

The included angle between the sides of V-belt is

A) 40° B) 45° C) 38° D) 60°

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Answer & Solution

Answer: Option A

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20

The width of the pulley should be __________ width of the belt.

A) Equal to B) Less than C) Greater than D) None of these

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Answer & Solution

Answer: Option C

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Machine Design MCQ Questions & Answers | Mechanical Engineering