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MCQs

Total Questions : 124 | Page 9 of 13 pages
Question 81. Two multimeters A and B have sensitivities of 10 kΩ/V and 30 kΩ/V respectively. Then ___________.
  1.    Multimeter A is more sensitive
  2.    Multimeter B is more sensitive
  3.    Both are equally sensitive
  4.    None of the above
 Discuss Question
Answer: Option B. -> Multimeter B is more sensitive
Question 82. A transducer that converts measurand into the form of pulse is called
  1.    Active transducer
  2.    Analog transducer
  3.    Digital transducer
  4.    Pulse transducer
 Discuss Question
Answer: Option D. -> Pulse transducer
Question 83. Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them. Such materials are called
  1.    Piezo-electric
  2.    Photo-electric
  3.    Thermo-electric
  4.    Photo-resistive
 Discuss Question
Answer: Option A. -> Piezo-electric
Question 84. A galvanometer of resistance G is shunted by a very small resistance S. The resistance of the resulting ammeter is ___________
  1.    GS/(G+S)
  2.    G+S
  3.    G-S
  4.    None of the above
 Discuss Question
Answer: Option A. -> GS/(G+S)
Question 85. The resistance of an ideal voltmeter is ___________
  1.    Low
  2.    Infinite
  3.    Zero
  4.    High
 Discuss Question
Answer: Option B. -> Infinite
Question 86. Power gain in decibels is equal to voltage gain in decibels only when
  1.    Input impedance is equal to output impedance
  2.    Output impedance is zero
  3.    Never
  4.    Input impedance is zero
 Discuss Question
Answer: Option A. -> Input impedance is equal to output impedance
Question 87. In phase response of a recorder noise level ___________ with the band width of a system
  1.    Increases
  2.    Decreases
  3.    Reaches unity
  4.    Reaches infinity
 Discuss Question
Answer: Option A. -> Increases
Question 88. Pressure transducer for measuring blood pressure is
  1.    Strain gauge transducer only
  2.    Strain gauge or capacitive transducer
  3.    Resistive transducer
  4.    Fiber optic transducer
 Discuss Question
Answer: Option B. -> Strain gauge or capacitive transducer
Question 89. Duration of rotation of pen in the PMMC system depends upon ___________.
  1.    Phase angle
  2.    Frequency
  3.    Magnitude
  4.    Direction
 Discuss Question
Answer: Option D. -> Direction
Question 90. For display of signal pattern ___________ voltage is applied to the horizontal plates of a CRO
  1.    Sinusoidal
  2.    Rectangular
  3.    Sawtooth
  4.    None of the above
 Discuss Question
Answer: Option C. -> Sawtooth

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