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MCQs

Total Questions : 152 | Page 3 of 16 pages
Question 21. Input impedance of an electronic voltmeter is ________
  1.    low
  2.    high
  3.    medium
  4.    zero
 Discuss Question
Answer: Option B. -> high
Answer: (b).high
Question 22. What is basic range of a meter?
  1.    causes maximum deflection
  2.    causes minimum deflection
  3.    causes zero deflection
  4.    causes medium deflection
 Discuss Question
Answer: Option A. -> causes maximum deflection
Answer: (a).causes maximum deflection
Question 23. Bridge is balanced by ________
  1.    galvanometer
  2.    oscillator
  3.    zero adjustment resistor
  4.    head phone
 Discuss Question
Answer: Option C. -> zero adjustment resistor
Answer: (c).zero adjustment resistor
Question 24. What is the effect of the input on the transistor Q₂?
  1.    bias on Q₂ decreases
  2.    bias on Q₂ is constant
  3.    bias on Q₂ is zero
  4.    bias on Q₂ increases
 Discuss Question
Answer: Option D. -> bias on Q₂ increases
Answer: (d).bias on Q₂ increases
Question 25. Meter can be isolated from the circuit in a basic D.C. electronic voltmeter.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 26. High range can be obtained in a basic D.C. electronic voltmeter by ________
  1.    a transformer
  2.    an attenuator
  3.    a transducer
  4.    a resistor
 Discuss Question
Answer: Option B. -> an attenuator
Answer: (b).an attenuator
Question 27. Overloading is ________
  1.    damages the meter
  2.    increases the temperature
  3.    doesn’t affect the meter
  4.    decreases the sensitivity
 Discuss Question
Answer: Option C. -> doesn’t affect the meter
Answer: (c).doesn’t affect the meter
Question 28. R.M.S value means _________
  1.    root mean square
  2.    rate mean second
  3.    root median second
  4.    rate mode second
 Discuss Question
Answer: Option A. -> root mean square
Answer: (a).root mean square
Question 29. Sensitivity of electronic voltmeter is high.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 30. Meter reading is obtained by ________
  1.    sensing voltage
  2.    sensing heat power
  3.    sensing current
  4.    sensing resistance
 Discuss Question
Answer: Option B. -> sensing heat power
Answer: (b).sensing heat power

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