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MCQs

Total Questions : 124 | Page 2 of 13 pages
Question 11. If the full-scale deflection current of a multimeter is 50 µA, its sensitivity is
  1.    10 kΩ/V
  2.    100 kΩ/V
  3.    50 kΩ/V
  4.    20 kΩ/V
 Discuss Question
Answer: Option D. -> 20 kΩ/V
Question 12. Which of the following is likely to have the largest resistance?
  1.    Voltmeter of range 10 V
  2.    Moving coil galvanometer
  3.    Ammeter of range 1 A
  4.    A copper wire of length 1 m and diameter 3 mm
 Discuss Question
Answer: Option A. -> Voltmeter of range 10 V
Question 13. A VTVM is never used to measure ___________.
  1.    Voltage
  2.    Current
  3.    Resistance
  4.    None of the above
 Discuss Question
Answer: Option B. -> Current
Question 14. A CRO is used to measure ___________.
  1.    Voltage
  2.    Frequency
  3.    Phase
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Question 15. In foil strain gauge the thickness of foil varies from
  1.    2.5 micron to 6 micron
  2.    25 micron (or) less
  3.    25 micron to 60 micron
  4.    2.5 micron to 5 micron
 Discuss Question
Answer: Option A. -> 2.5 micron to 6 micron
Question 16. If the negative potential on the control grid of CRT is increased, the intensity of spot ___________.
  1.    Is increased
  2.    Is decreased
  3.    Remains the same
  4.    None of the above
 Discuss Question
Answer: Option B. -> Is decreased
Question 17. Isolation amplifier actually operates on the principle of
  1.    Filtering
  2.    Attenuation
  3.    Clipping
  4.    Amplification
 Discuss Question
Answer: Option B. -> Attenuation
Question 18. Storage oscilloscope operates on the principle of
  1.    Primary emission
  2.    Deflection
  3.    Secondary emission
  4.    Diffusion
 Discuss Question
Answer: Option C. -> Secondary emission
Question 19. _____________ is the example of photo emissive cell
  1.    LDR
  2.    Photo diode
  3.    Photo transistor
  4.    Photo multiplier
 Discuss Question
Answer: Option A. -> LDR
Question 20. The principle of operation of LVDT is based on the variation of
  1.    Self inductance
  2.    Mutual inductance
  3.    Reluctance
  4.    Permanence
 Discuss Question
Answer: Option B. -> Mutual inductance

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