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MCQs

Total Questions : 122 | Page 10 of 13 pages
Question 91. The Q of a tuned circuit refers to the property of ___________
  1.    Sensitivity
  2.    Fidelity
  3.    Selectivity
  4.    None of the above
 Discuss Question
Answer: Option C. -> Selectivity
Question 92. The circuit that provides the best stabilization of operating point is ___________
  1.    Base resistor bias
  2.    Collector feedback bias
  3.    Potential divider bias
  4.    None of the above
 Discuss Question
Answer: Option C. -> Potential divider bias
Question 93. Operating point represents ___________
  1.    Values of IC and VCE when signal is applied
  2.    The magnitude of signal
  3.    Zero signal values of IC and VCE
  4.    None of the above
 Discuss Question
Answer: Option C. -> Zero signal values of IC and VCE
Question 94. The point of intersection of d.c. and a.c. load lines represents ___________
  1.    Operating point
  2.    Current gain
  3.    Voltage gain
  4.    None of the above
 Discuss Question
Answer: Option A. -> Operating point
Question 95. For faithful amplification by a transistor circuit, the value of VCE should ___________ for silicon transistor
  1.    Not fall below 1 V
  2.    Be zero
  3.    Be 0.2 V
  4.    None of the above
 Discuss Question
Answer: Option A. -> Not fall below 1 V
Question 96. At series resonance, the phase angle between applied voltage and circuit is ___________
  1.    90°
  2.    180°
  3.    0°
  4.    None of the above
 Discuss Question
Answer: Option C. -> 0°
Question 97. At parallel resonance, the line current is ___________
  1.    Minimum
  2.    Maximum
  3.    Quite large
  4.    None of the above
 Discuss Question
Answer: Option A. -> Minimum
Question 98. At parallel resonance, the net reactive component circuit current is ___________
  1.    Capacitive
  2.    Zero
  3.    Inductive
  4.    None of the above
 Discuss Question
Answer: Option B. -> Zero
Question 99. At series resonance, the net reactive component of circuit current is ___________
  1.    Zero
  2.    Inductive
  3.    Capacitive
  4.    None of the above
 Discuss Question
Answer: Option A. -> Zero
Question 100. At parallel resonance, the phase angle between the applied voltage and circuit current is ___________
  1.    90°
  2.    180°
  3.    0°
  4.    None of the above
 Discuss Question
Answer: Option C. -> 0°

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