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MCQs

Total Questions : 152 | Page 2 of 16 pages
Question 11. Current is converted to voltage __________
  1.    through a voltmeter
  2.    through a resistance
  3.    through an ammeter
  4.    through a galvanometer
 Discuss Question
Answer: Option B. -> through a resistance
Answer: (b).through a resistance
Question 12. Output of a digital multimeter is _________
  1.    mechanical
  2.    optical
  3.    electrical
  4.    analog
 Discuss Question
Answer: Option C. -> electrical
Answer: (c).electrical
Question 13. Analog mulimeters require power supply.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 14. Quantities are digitised using _________
  1.    D/A converter
  2.    oscillator
  3.    amplifier
  4.    A/D converter
 Discuss Question
Answer: Option D. -> A/D converter
Answer: (d).A/D converter
Question 15. For resistance measurement, meter contains _________
  1.    high current source
  2.    medium current source
  3.    low current source
  4.    low voltage source
 Discuss Question
Answer: Option C. -> low current source
Answer: (c).low current source
Question 16. Voltage across the shunt is measured by ________
  1.    voltmeter
  2.    multimeter
  3.    thermocouple
  4.    thermometer
 Discuss Question
Answer: Option C. -> thermocouple
Answer: (c).thermocouple
Question 17. In a Q Meter, the values of tuning capacitor are C₃ and C₄ for resonant frequencies f₃ and 2f₄ respectively. The value of distributed capacitance is?
  1.    \(\frac{C_3-C_4}{2}\)
  2.    \(\frac{C_3-2C_4}{3}\)
  3.    \(\frac{C_3-4C_4}{3}\)
  4.    \(\frac{C_3-3C_4}{2}\)
 Discuss Question
Answer: Option C. -> \(\frac{C_3-4C_4}{3}\)
Answer: (c).\(\frac{C_3-4C_4}{3}\)
Question 18. A circuit tuned to a frequency of 1.5 MHz and having an effective capacitance of 150 pF. In this circuit, the current falls to 70.7 % of its resonant value. The frequency deviates from the resonant frequency by 5 kHz. Q factor is?
  1.    50
  2.    100
  3.    150
  4.    200
 Discuss Question
Answer: Option C. -> 150
Answer: (c).150
Question 19. Inductance of the coil is ________
  1.    L = \(\frac{1}{(2πf)C}\)
  2.    L = \(\frac{1}{(2πf)^2}\)
  3.    L = \(\frac{1}{C}\)
  4.    L = \(\frac{1}{(2πf)^2 C}\)
 Discuss Question
Answer: Option D. -> L = \(\frac{1}{(2πf)^2 C}\)
Answer: (d).L = \(\frac{1}{(2πf)^2 C}\)
Question 20. Q meter operator is the principle of __________
  1.    Series resonance
  2.    Current resonance
  3.    Self-inductance
  4.    Eddy currents
 Discuss Question
Answer: Option A. -> Series resonance
Answer: (a).Series resonance

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