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MCQs

Total Questions : 141 | Page 12 of 15 pages
Question 111. A bridge circuit is used for the measurement of which of the following components?
  1.    Resistance, capacitance, and inductance
  2.    Diode, triode, and thyristor
  3.    Transistor, thermistor, and antenna
  4.    LED, op amp, and transducer
 Discuss Question
Answer: Option A. -> Resistance, capacitance, and inductance
Answer: (a).Resistance, capacitance, and inductance
Question 112. A simple bridge circuit consists of a network of __________
  1.    3 resistance arms
  2.    2 resistance arms
  3.    4 resistance arms
  4.    6 resistance arms
 Discuss Question
Answer: Option C. -> 4 resistance arms
Answer: (c).4 resistance arms
Question 113. Which principle operates a bridge circuit?
  1.    null indication
  2.    ampere’s rule
  3.    partial indication
  4.    kirchhoff’s laws
 Discuss Question
Answer: Option A. -> null indication
Answer: (a).null indication
Question 114. What is applied to the two opposite junctions of a bridge circuit?
  1.    source of voltage
  2.    source of current
  3.    source of power
  4.    source of impedance
 Discuss Question
Answer: Option B. -> source of current
Answer: (b).source of current
Question 115. A bridge circuit uses which method of measurement?
  1.    absolute
  2.    relative
  3.    differential
  4.    comparison
 Discuss Question
Answer: Option D. -> comparison
Answer: (d).comparison
Question 116. How is thermal emf generated?
  1.    when current flows
  2.    when voltage is applied
  3.    when the null detector is connected
  4.    when dissimilar metals come in contact
 Discuss Question
Answer: Option D. -> when dissimilar metals come in contact
Answer: (d).when dissimilar metals come in contact
Question 117. Wheatstone bridge is used to measure resistance in the range of ________
  1.    1Ω to a few megaohms
  2.    10kΩ to a few megaohms
  3.    100MΩ to a few gegaohms
  4.    100Ω to a few teraohms
 Discuss Question
Answer: Option A. -> 1Ω to a few megaohms
Answer: (a).1Ω to a few megaohms
Question 118. Wheatstone bridge is used to measure the d.c. resistance of various types of wires for _________
  1.    determining their effective resistance
  2.    computing the power dissipation
  3.    quality control of wire
  4.    maintaining a source of constant e.m.f
 Discuss Question
Answer: Option C. -> quality control of wire
Answer: (c).quality control of wire
Question 119. Wheatstone bridge is a __________
  1.    a.c. bridge
  2.    d.c. bridge
  3.    high voltage bridge
  4.    power dissipation bridge
 Discuss Question
Answer: Option B. -> d.c. bridge
Answer: (b).d.c. bridge
Question 120. Thermal emf can be prevented by _________
  1.    using more sensitive galvanometers
  2.    using similar metals
  3.    by separating the dissimilar metals
  4.    reducing the supply emf
 Discuss Question
Answer: Option A. -> using more sensitive galvanometers
Answer: (a).using more sensitive galvanometers

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