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MCQs

Total Questions : 109 | Page 3 of 11 pages
Question 21. How can R₁ be scaled?
  1.    by using a scale
  2.    by using an ohmmeter
  3.    by calibration
  4.    by using a galvanometer
 Discuss Question
Answer: Option C. -> by calibration
Answer: (c).by calibration
Question 22. Scale of resistance can be calibrated.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 23. Commercial Maxwell bridges measures _________
  1.    inductances in the range of 1 to 1000H
  2.    capacitances in the range of 10mF to 1F
  3.    resistances in the range of 0.001 Ω to 1Ω
  4.    power in the range of 1W to 50MF
 Discuss Question
Answer: Option A. -> inductances in the range of 1 to 1000H
Answer: (a).inductances in the range of 1 to 1000H
Question 24. Bridge can be used for the measurement of _________
  1.    high Q values
  2.    intermediate Q values
  3.    very low Q values
  4.    low Q values
 Discuss Question
Answer: Option D. -> low Q values
Answer: (d).low Q values
Question 25. The balance condition is _________
  1.    is easy to obtain
  2.    is difficult to obtain
  3.    can’t be obtained
  4.    exists always
 Discuss Question
Answer: Option B. -> is difficult to obtain
Answer: (b).is difficult to obtain
Question 26. In Wein’s bridge, the output frequency is determined by __________
  1.    RLC combination
  2.    LC combination
  3.    RC combination
  4.    RL combination
 Discuss Question
Answer: Option C. -> RC combination
Answer: (c).RC combination
Question 27. What is the disadvantage of Maxwell Bridge?
  1.    Inductance cannot be measured over a wide range
  2.    Measurement is not independent of frequency
  3.    Number of components is large
  4.    Inductance can be measured over a wide range
 Discuss Question
Answer: Option A. -> Inductance cannot be measured over a wide range
Answer: (a).Inductance cannot be measured over a wide range
Question 28. Hay’s Bridge is used for measuring __________
  1.    Resistance in the milliohm range
  2.    Low values of capacitance
  3.    Comparison of resistances which are nearly equal
  4.    The Inductance of a coil with a large time constant
 Discuss Question
Answer: Option D. -> The Inductance of a coil with a large time constant
Answer: (d).The Inductance of a coil with a large time constant
Question 29. Maxwell’s Inductance Capacitance Bridge is used for measuring ___________
  1.    Inductance
  2.    Capacitance
  3.    Frequency
  4.    Mutual Inductance
 Discuss Question
Answer: Option A. -> Inductance
Answer: (a).Inductance
Question 30. The four arms of an AC bridge network are as follows:
Arm AB: unknown impedance
Arm BC: standard capacitor C₂ of 1000pf
Arm CD: a non-inductive resistance of R of 100 Ω in parallel to a capacitor of 0.01 μF
Arm DA: a non-inductive resistance of 1000 Ω
The supply frequency is 50 Hz and connected across terminals B and D. If the bridge is balanced with the above value, determine the value of unknown Impedance.
  1.    10 kΩ
  2.    100 kΩ
  3.    250 kΩ
  4.    20 kΩ
 Discuss Question
Answer: Option A. -> 10 kΩ
Answer: (a).10 kΩ

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