Which of following is normally ON device?
Which of following is normally ON device?
A. SIT
B. BJT
C. TRIAC
D. IGBT
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Under normal operating condition voltage clamping device offers impedance of_________?
Under normal operating condition voltage clamg device offers impedance of_________?A. high value.
B. low value.
C. zero value.
D. moderate value.Very large values of modulation index (greater than 3.24) lead to___________?
Very large values of modulation index (greater than 3.24) lead to___________?A. Square AC output voltage
B. Sine AC output voltage
C. Triangular AC output voltage
D. Trapezoidal AC output voltageA rectifier with an external low pass filter is an example of______________?
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 theseThyristor is nothing but a____________?
Thyristor is nothing but a____________?A. Controlled transistor
B. Controlled switch
C. Amplifier with higher gain
D. Amplifier with large current gainThe typical time of rising time lies between______________?
The typical time of rising time lies between______________?A. 10 – 20 µs
B. 40 – 60 µs
C. 1 – 4 µs
D. 90 – 100 µsTransformer utilization factor is a measure of the merit of a rectifier circuit. It is the ratio of_______________?
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