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MCQs

Total Questions : 374 | Page 7 of 38 pages
Question 61. The thermocouple instrument will measure
  1.    Current
  2.    Voltage
  3.    Flux
  4.    None of the above
 Discuss Question
Answer: Option D. -> None of the above
Question 62. The thermocouple instruments do not have
  1.    High sensitivity
  2.    Absence of frequency error
  3.    Independence of ambient temperature
  4.    High degree of measuring accuracy
 Discuss Question
Answer: Option D. -> High degree of measuring accuracy
Question 63. Which of the following instruments can be used to measure AC current only?
  1.    Permanent Magnet Type ammeter
  2.    Induction type ammeter
  3.    Moving iron voltmeter
  4.    Moving iron ammeter
 Discuss Question
Answer: Option B. -> Induction type ammeter
Question 64. Wien bridge is useful for measuring
  1.    Very high frequency
  2.    Low frequency
  3.    Medium frequency
  4.    High frequency
 Discuss Question
Answer: Option D. -> High frequency
Question 65. When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is
  1.    Short-circuited
  2.    All right
  3.    Faulty
  4.    None of the above
 Discuss Question
Answer: Option B. -> All right
Question 66. An Ohmmeter is a
  1.    None of the listed here
  2.    Moving iron instrument
  3.    Moving coil instrument
  4.    Dynamometer instrument
 Discuss Question
Answer: Option C. -> Moving coil instrument
Question 67. The rectifier instrument is not free from
  1.    Wave shape error
  2.    All of the listed here
  3.    Temperature error
  4.    Frequency error
 Discuss Question
Answer: Option D. -> Frequency error
Question 68. Instrument transformers are
  1.    Pottential transformers
  2.    Power transformers
  3.    Current transformers
  4.    Both current and potential transformers
 Discuss Question
Answer: Option D. -> Both current and potential transformers
Question 69. Most sensitive galvanometer is
  1.    Elastic galvanometer
  2.    Vibration galvanometer
  3.    Duddle galvanometer
  4.    Spot ballastic galvanometer
 Discuss Question
Answer: Option D. -> Spot ballastic galvanometer
Question 70. Alternating current is measured by
  1.    Permanent magnet type ammeter
  2.    Induction ammeter
  3.    Moving iron repulsion type voltmeter
  4.    Electrostatic ammeter
 Discuss Question
Answer: Option B. -> Induction ammeter

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