Design of Machine Elements MCQs with answers Page - 14

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A

Admin • 831.35K Points
Coach

Q. Cereals improve flowability and lower collapsibility.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. How much should fuel oil be added to increase the moulding ability of sand?

  • (A) 0.01% – 0.1%
  • (B) 0.02% – 0.2%
  • (C) 0.03% – 0.3%
  • (D) 0.04% – 0.4%

A

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Q. Which of the following function can the spring perform?

  • (A) store energy
  • (B) absorb shock
  • (C) measure force
  • (D) all of the mentioned

A

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Q. The helix angle is very small about 2⁰. The spring is open coiled spring.

  • (A) yes
  • (B) it is closed coiled spring
  • (C) that small angle isn’t possible
  • (D) none of the listed

A

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Q. The helical spring ad wire of helical torsion spring, both are subjected to torsional shear stresses.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. Multi leaf springs are not recommended for automobile and rail road suspensions.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. The spring index is the ratio of wire diameter to mean coil diameter.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. If spring index=2.5, what can be concluded about stresses in the wire?

  • (A) they are high
  • (B) they are negligible
  • (C) they are moderate
  • (D) cannot be determined

A

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Q. A spring with index=15 is prone to buckling.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. If number of coils are 8 and wire diameter of spring 3mm, then solid length is given by?

  • (A) none of the listed
  • (B) 27mm
  • (C) 24mm
  • (D) 21mm

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