1) The voltage doubler circuit is suitable for the voltage up to
a. 2V
b. 4V
c. 6V
d. 8V
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Answer
Explanation
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ANSWER: 4V
Explanation:
No explanation is available for this question!
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2) In large impulse generators, the spark gaps are generally
a. Sphere gaps
b. Hemispherical gaps
c. Square gaps
d. Either (a) or (b)
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Answer
Explanation
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ANSWER: Either (a) or (b)
Explanation:
No explanation is available for this question!
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3) For producing large values of impulse currents, a number of capacitors are charged in
a. Parallel and discharged in series
b. Parallel and discharged in parallel
c. Series and discharged in series
d. Series and discharged in parallel
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Answer
Explanation
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ANSWER: Parallel and discharged in parallel
Explanation:
No explanation is available for this question!
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4) In a multistage impulse generator, for producing very high voltages, a bank of capacitors is
a. Charged in parallel and then discharged in series
b. Charged in series and then discharged in parallel
c. Charged in parallel and then discharged in parallel only
d. Charged in series and then discharged in series only
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Answer
Explanation
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ANSWER: Charged in parallel and then discharged in series
Explanation:
No explanation is available for this question!
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5) In a series RLC circuit, the wave front and wave tail times are controlled by changing the value
a. R only
b. R and L simultaneously
c. R and C simultaneously
d. L and C simultaneously
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Answer
Explanation
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ANSWER: R and L simultaneously
Explanation:
No explanation is available for this question!
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6) The disadvantages of resonant transformers is
a. Pure sine wave output
b. No high power arcing
c. No repeated flashovers
d. Additional variable chokes
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Answer
Explanation
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ANSWER: Additional variable chokes
Explanation:
No explanation is available for this question!
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7) In Van de Graaff generators, the shape of high voltage electrode is nearly spherical to avoid
a. High surface field gradients
b. Corona
c. Local discharges
d. All of these
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Answer
Explanation
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ANSWER: All of these
Explanation:
No explanation is available for this question!
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8) A two-pulse circuit requires
a. Double the number of diodes and half of the no. of capacitors required for single-pulse circuits
b. Half of the no. of diodes and double the no. of capacitors required for single-pulse circuits
c. Double the no. of diodes and one and a half times the capacitors required for single-pulse circuits
d. One and a half times the no. of diodes and double the capacitors required for single-pulse circuits
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Answer
Explanation
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ANSWER: Double the no. of diodes and one and a half times the capacitors required for single-pulse circuits
Explanation:
No explanation is available for this question!
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9) The ripple voltage for half wave rectifier is
a. Smaller than that of full wave rectifier
b. Larger than that of full wave rectifier
c. Equal to that of full wave rectifier
d. None of these
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Answer
Explanation
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ANSWER: Larger than that of full wave rectifier
Explanation:
No explanation is available for this question!
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10) In the half wave rectifier, charging current can be limited by using an additional
a. Resistance in series with the secondary of the transformer
b. Inductance in series with the primary of the transformer
c. Inductance in series with the primary of the transformer
d. Capacitance in series with the secondary of the transformer
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Answer
Explanation
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ANSWER: Resistance in series with the secondary of the transformer
Explanation:
No explanation is available for this question!
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