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MCQs

Total Questions : 120 | Page 2 of 12 pages
Question 11. Inverse transducers are also known as _________________
  1.    Open loop transducers
  2.    Closed loop transducers
  3.    Input transducers
  4.    Output transducers
 Discuss Question
Answer: Option D. -> Output transducers
Answer: (d).Output transducers
Question 12. In a PMMC device what change will happen to torque, if flux density increased?
  1.    Increases
  2.    Decreases
  3.    Remain constant
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Increases
Answer: (a).Increases
Question 13. Which of the following represents torque produced in a PMMC device?
  1.    BAI₀
  2.    BNI₀
  3.    BANI₀
  4.    BA2NI₀
 Discuss Question
Answer: Option C. -> BANI₀
Answer: (c).BANI₀
Question 14. Inverse transducer is system which converts _________________
  1.    Electrical quantity to non-electrical quantity
  2.    Non-electrical quantity to electrical quantity
  3.    Electrical quantity to electrical quantity itself
  4.    Non- electrical quantity to non-electrical quantity itself
 Discuss Question
Answer: Option A. -> Electrical quantity to non-electrical quantity
Answer: (a).Electrical quantity to non-electrical quantity
Question 15. A system with feedback loop doesn’t have ______________
  1.    Less stability
  2.    High linearity
  3.    Zero-order operation
  4.    All of the mentioned
 Discuss Question
Answer: Option A. -> Less stability
Answer: (a).Less stability
Question 16. Internal temperature of a hot body is measured by measuring __________________
  1.    Temperature of surrounding medium
  2.    Temperature of external surface
  3.    Direct measurement
  4.    Cannot measure internal temperature
 Discuss Question
Answer: Option B. -> Temperature of external surface
Answer: (b).Temperature of external surface
Question 17. Temperature gradient of a substance is _________________
  1.    Positive constant
  2.    Negative constant
  3.    Zero
  4.    Variable
 Discuss Question
Answer: Option D. -> Variable
Answer: (d).Variable
Question 18. Which of the following represents closed loop thermal control?
  1.    Thermistor
  2.    Thermostat
  3.    Thermocouple
  4.    All of the mentioned
 Discuss Question
Answer: Option B. -> Thermostat
Answer: (b).Thermostat
Question 19. Feedback system is used to ____________
  1.    Cancel use of temperature gradient
  2.    To reduce delay in measurement
  3.    To improve accuracy
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> To improve accuracy
Answer: (c).To improve accuracy
Question 20. If temperature T₁ of material A is equal to temperature T₂ of material B, then which of the following are correct?
  1.    Heat flow from A to B
  2.    Heat flow from B to A
  3.    No heat flow
  4.    Temperature at the junction increases
 Discuss Question
Answer: Option C. -> No heat flow
Answer: (c).No heat flow

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