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MCQs

Total Questions : 141 | Page 13 of 15 pages
Question 121. Why is the scale of a megger calibrated in megaohms?
  1.    to indicate resistance
  2.    to minimise the current flow
  3.    to increase the voltage drop
  4.    to reduce the temperature
 Discuss Question
Answer: Option A. -> to indicate resistance
Answer: (a).to indicate resistance
Question 122. Electrical continuity between any two points exists if _________
  1.    there is current flow through them
  2.    there is a wire connecting the points
  3.    there is sufficient voltage drop
  4.    pointer shows deflection
 Discuss Question
Answer: Option D. -> pointer shows deflection
Answer: (d).pointer shows deflection
Question 123. Continuity between any two points can be measured using _________
  1.    ammeter
  2.    voltmeter
  3.    megger
  4.    galvanometer
 Discuss Question
Answer: Option C. -> megger
Answer: (c).megger
Question 124. Megger can be used for verifying the electrical insulation level of ____________
  1.    passive components such as resistance, capacitor and inductance
  2.    devices such as motor, cable, etc
  3.    solid state devices
  4.    liquid crystal devices
 Discuss Question
Answer: Option B. -> devices such as motor, cable, etc
Answer: (b).devices such as motor, cable, etc
Question 125. Megger is also known as _________
  1.    megohmmeter
  2.    multimeter
  3.    galvanometer
  4.    ammeter
 Discuss Question
Answer: Option A. -> megohmmeter
Answer: (a).megohmmeter
Question 126. The accuracy of a bridge depends on the _________
  1.    null indicator
  2.    bridge components
  3.    current source
  4.    voltage source
 Discuss Question
Answer: Option B. -> bridge components
Answer: (b).bridge components
Question 127. When is the bridge circuit balanced?
  1.    When voltage is applied
  2.    When current flows through the opposite ends of the bridge circuit
  3.    When no current flows through the galvanometer
  4.    When impedance is minimum
 Discuss Question
Answer: Option C. -> When no current flows through the galvanometer
Answer: (c).When no current flows through the galvanometer
Question 128. Relationship at balance condition between the component values of the four arms of a bridge is known as _________
  1.    full load condition
  2.    open circuit condition
  3.    short circuit condition
  4.    balancing condition
 Discuss Question
Answer: Option D. -> balancing condition
Answer: (d).balancing condition
Question 129. What is used to characterize single port devices, multiport devices, etc?
  1.    current values
  2.    impedance values
  3.    voltage values
  4.    power values
 Discuss Question
Answer: Option B. -> impedance values
Answer: (b).impedance values
Question 130. D.C. bridges are used for _________
  1.    measurement of resistance
  2.    measurement of capacitance
  3.    measurement of current
  4.    measurement of inductance
 Discuss Question
Answer: Option A. -> measurement of resistance
Answer: (a).measurement of resistance

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