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
Related Mcqs:
- 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 - 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) - In a full wave rectifier, the rectification ratio is approximately equal to____________?
A. 61%
B. 71%
C. 81%
D. 91% - Gate circuit or triggering circuit of a thyristor is
A. lower power circuit.
B. high power circuit.
C. magnetic circuit.
D. may be low power or high power circuit - A rectifier with an external low pass filter is an example of______________?
A. Indirect switch matrix circuits
B. Direct switch matrix circuits
C. Embedded converters
D. All of these - In a silicon controlled rectifier, the load is connected___________?
A. Across anode
B. In series with anode
C. Across cathode
D. In series with cathode - In a single phase full wave rectifier, during blocking state the pea inverse voltage of diode is______________?
A. V m
B. 2 V m
C. V m / 2
D. 4 V m - A full wave rectifier with resistive load produces___________?
A. Second harmonic
B. Third harmonic
C. Fifth harmonic
D. Do not produce harmonics - Silicon controlled rectifier can be turned on____________?
A. By applying a gate pulse and turned off only when current becomes zero
B. And turned off by applying gate pulse
C. By applying a gate pulse and turned off by removing the gate pulse
D. By making current non zero and turned off by making current zero - If the firing angle becomes negative, then the rectifier begins to work as_______________?
A. A rectifier
B. An inverter
C. A chopper
D. A regulator
