1) A full wave rectifier with resistive load produces
a. Second harmonic
b. Third harmonic
c. Fifth harmonic
d. Do not produce harmonics
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Answer
Explanation
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ANSWER: Do not produce harmonics
Explanation:
No explanation is available for this question!
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2) The input current waveform of a bridge controlled rectifier when the load is perfectly filtered is
a. Sine wave
b. Square wave
c. Saw - tooth wave
d. Trapezoidal wave
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Answer
Explanation
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ANSWER: Square wave
Explanation:
No explanation is available for this question!
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3) Transformer utilization factor is a measure of the merit of a rectifier circuit. It is the ratio of
a. AC input power to the transformer volt - amp rating required by secondary
b. AC input power to the transformer volt - amp rating required by primary
c. DC output power to the transformer volt - amp rating required by secondary
d. DC output power to the transformer volt - amp rating required by primary
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Answer
Explanation
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ANSWER: DC output power to the transformer volt - amp rating required by secondary
Explanation:
No explanation is available for this question!
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4) Ripple factor is the ratio of
a. Rms value of the ac component of load voltage to the dc voltage
b. Average value of the ac component of load voltage to the peak value of voltage
c. Average value of the dc component of load voltage to the ac voltage
d. Peak value of the dc component of load voltage to the ac voltage
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Answer
Explanation
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ANSWER: Rms value of the ac component of load voltage to the dc voltage
Explanation:
No explanation is available for this question!
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5) Form factor of a rectifier is the ratio of
a. Root mean square value of voltage and current to its peak value
b. Root mean square value of voltage and current to its average value
c. Average value of current and voltage to its root mean square value
d. Peak value of current and voltage to its root mean square value
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Answer
Explanation
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ANSWER: Root mean square value of voltage and current to its average value
Explanation:
No explanation is available for this question!
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6) In rectifiers, load current flow is
a. Unidirectional
b. Bidirectional
c. Either (a) or (b)
d. Non directional
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Answer
Explanation
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ANSWER: Unidirectional
Explanation:
No explanation is available for this question!
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7) Due to non sinusoidal waveform of the input current, the power factor of the rectifier is
a. Negatively affected by firing angle
b. Negatively affected by distortion of the input current
c. Positively affected by both firing angle and distortion of the input current
d. Both (a) and (b)
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Answer
Explanation
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ANSWER: Both (a) and (b)
Explanation:
No explanation is available for this question!
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