Q. What is the maximum permissible error for class I micrometers?

  • (A) 0.002 mm
  • (B) 0.004 mm
  • (C) 0.008 mm
  • (D) 0.016 mm
πŸ’¬ Discuss
βœ… Correct Answer: (B) 0.004 mm

Q. ‘A system will be error free if we remove all systematic error’.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---
πŸ’¬ Discuss
βœ… Correct Answer: (B) false

Q. Which of the following is correct for selective assembly?

  • (A) not suitable for industrial purposes
  • (B) cost increases due to automatic gauging
  • (C) wastage is high due to selective selection
  • (D) this method is followed in ball and roller bearing units
πŸ’¬ Discuss
βœ… Correct Answer: (D) this method is followed in ball and roller bearing units

Q. For checking straightness, straight edge is placed over a surface and these two are viewed against the light. Which of the following option true if colour of light is red?

  • (A) gap between 0.12 to 0.17 mm
  • (B) gap between 0.2 to 0.7 mm
  • (C) gap between 1.7 to 2 mm
  • (D) gap between 0.0012 to 0.0017 mm
πŸ’¬ Discuss
βœ… Correct Answer: (D) gap between 0.0012 to 0.0017 mm

Q. Which of the following is the best for the examination of surface finish?

  • (A) touch inspection
  • (B) visual inspection
  • (C) scratch inspection
  • (D) microscopic inspection
πŸ’¬ Discuss
βœ… Correct Answer: (D) microscopic inspection

Q. What is the relationship between Orificemeter diameter and pipe diameter

  • (A) orificemeter diameter is 0.5 times the pipe diameter
  • (B) orificemeter diameter is one third times the pipe diameter
  • (C) orificemeter diameter is one fourth times the pipe diameter
  • (D) orificemeter diameter is equal to the pipe diameter
πŸ’¬ Discuss
βœ… Correct Answer: (C) orificemeter diameter is one fourth times the pipe diameter

Q. 3 TEMPERATURE: BIMETALLIC STRIP, THERMOCOUPLES

  • (A) strain
  • (B) pressure
  • (C) displacement
  • (D) voltage
πŸ’¬ Discuss
βœ… Correct Answer: (C) displacement

Q. Relation between temperature and resistance of a conductor is

  • (A) rt = rref [1+t]
  • (B) rt = rref [1+αβˆ†t]
  • (C) rt = rref [1-αt]
  • (D) rt = rref [1-t]
πŸ’¬ Discuss
βœ… Correct Answer: (B) rt = rref [1+αβˆ†t]

Q. Most metallic conductors have a

  • (A) neutral temperature coefficient of resistance
  • (B) negative temperature coefficient of resistance
  • (C) positive temperature coefficient of resistance
  • (D) zero temperature coefficient of resistance
πŸ’¬ Discuss
βœ… Correct Answer: (C) positive temperature coefficient of resistance

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