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MCQs

Total Questions : 327 | Page 33 of 33 pages
Question 321. In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of__________?
  1.    R only
  2.    L only
  3.    C only
  4.    LorC
  5.    R,LorC
 Discuss Question
Answer: Option D. -> LorC
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 322. Pure inductive circuit takes power from the A.C. line when_________?
  1.    applied voltage decreases but current increases
  2.    applied voltage increases but current decreases
  3.    both applied voltage and current increase
  4.    both applied voltage and current decrease
 Discuss Question
Answer: Option A. -> applied voltage decreases but current increases
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 323. The time constant of a series R-C circuit is given by____________?
  1.    R/C
  2.    RC2
  3.    RC
  4.    R2C
 Discuss Question
Answer: Option C. -> RC
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 324. In any A.C. circuit always__________?
  1.    apparent power is more than actual power
  2.    reactive power is more than apparent power
  3.    actual power is more than reactive power
  4.    reactive power is more than actual power
 Discuss Question
Answer: Option A. -> apparent power is more than actual power
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 325. Inductance of coil___________?
  1.    is unaffected by the supply frequency
  2.    decreases with the increase in supply frequency
  3.    increases with the increase in supply frequency
  4.    becomes zero with the increase in supply frequency
 Discuss Question
Answer: Option C. -> increases with the increase in supply frequency
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 326. Time constant of a capacitive circuit__________?
  1.    increases with the decrease of capacitance and decrease of resistance
  2.    increases with the decrease of capacitance and increase of resistance
  3.    increases with the increase of capacitance and decrease of resistance
  4.    increase with increase of capacitance and increase of resistance
 Discuss Question
Answer: Option D. -> increase with increase of capacitance and increase of resistance
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 327. In a series L-C circuit at the resonant frequency the__________?
  1.    current is maximum
  2.    current is minimum
  3.    impedance is maximum
  4.    voltage across C is minimum
 Discuss Question
Answer: Option A. -> current is maximum
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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