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MCQs

Total Questions : 34 | Page 2 of 4 pages
Question 11. Why is invar used in bimetallic strips?
  1.    Low density
  2.    Low coefficient of expansion
  3.    High-temperature resistance
  4.    High abrasion resistance
 Discuss Question
Answer: Option B. -> Low coefficient of expansion
Answer: (b).Low coefficient of expansion
Question 12. Which of these materials is not used for resistance coils?
  1.    Nickel
  2.    Copper
  3.    Titanium
  4.    Platinum
 Discuss Question
Answer: Option C. -> Titanium
Answer: (c).Titanium
Question 13. Liquid expansion thermometers are filled with ________
  1.    Mercury
  2.    Amalgam
  3.    Gallium
  4.    Cesium
 Discuss Question
Answer: Option A. -> Mercury
Answer: (a).Mercury
Question 14. _______ is commonly used in liquid-expansion thermometers.
  1.    Bourdon tube
  2.    Spinning rotor gauge
  3.    McLeod gauge
  4.    Manometer
 Discuss Question
Answer: Option A. -> Bourdon tube
Answer: (a).Bourdon tube
Question 15. Resistance thermometer generally makes use of ________ for the measurement of resistance.
  1.    Potentiometer
  2.    Adruino
  3.    Diode bridge
  4.    Wheatstone bridge
 Discuss Question
Answer: Option D. -> Wheatstone bridge
Answer: (d).Wheatstone bridge
Question 16. The total emf of the thermoelectric pyrometer is given as ___________
  1.    Peltier effect
  2.    Thomson effect
  3.    Seebeck effect
  4.    Joule’s method
 Discuss Question
Answer: Option C. -> Seebeck effect
Answer: (c).Seebeck effect
Question 17. The cold junction in a thermoelectric pyrometer is maintained at ________
  1.    12 F
  2.    32 F
  3.    55 F
  4.    80 F
 Discuss Question
Answer: Option B. -> 32 F
Answer: (b).32 F
Question 18. What is the most widely used method for metallurgical temperature measurement?
  1.    Thermoelectric pyrometer
  2.    Optical pyrometer
  3.    Radiation pyrometer
  4.    Recording pyrometer
 Discuss Question
Answer: Option A. -> Thermoelectric pyrometer
Answer: (a).Thermoelectric pyrometer
Question 19. Constantan is an alloy containing _________
  1.    Nickel and aluminum
  2.    Silicon, manganese, and aluminum
  3.    Copper and nickel
  4.    Aluminum and manganese
 Discuss Question
Answer: Option C. -> Copper and nickel
Answer: (c).Copper and nickel
Question 20. Chromel-Alumel can be used at a temperature range of __________
  1.    300-1400 F
  2.    420-600 F
  3.    800-1000 F
  4.    1200-2200 F
 Discuss Question
Answer: Option D. -> 1200-2200 F
Answer: (d).1200-2200 F

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