A carrier based PWM technique in CSI is composed of____________?

Byadmin March 2, 2018August 9, 2021

A carrier based PWM technique in CSI is composed of____________?

A. A switching pulse generator and a shorting pulse generator
B. A shorting pulse distributor
C. A switching and shorting pulse combination
D. All of these

Power Electronics

A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be_____________?

A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be_____________?

A. 5, 7
B. 4, 6
C. 7, 5
D. 6, 4

Read More A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be_____________?
Power Electronics

Thermal voltage VT can be given by____________?

Thermal voltage VT can be given by____________?

A. Kq/T
B. KT/q
C. qT/K
D. (K2/q)(T + 1/T – 1)

Read More Thermal voltage VT can be given by____________?
Power Electronics

A GTO can be turned on by applying___________?

A GTO can be turned on by applying___________?

A. Positive gate signal
B. Positive drain signal
C. Positive source signal
D. None of these

Read More A GTO can be turned on by applying___________?
Power Electronics

In a push – pull converter, the filter capacitor can be obtained as____________?

In a push – pull converter, the filter capacitor can be obtained as____________?

A. Cmin = V / ( Vr L f2 )
B. Cmin= ( 1 – D ) V / ( Vr L f2 )
C. Cmin= ( 1 – 2 D ) V / 32 ( Vr L f2 )
D. Cmin= ( 1 – 2 D ) V / 42 ( Vr L f2 )

Read More In a push – pull converter, the filter capacitor can be obtained as____________?
Power Electronics

Any electrical signal present in a circuit other than the desired signal is known as______________?

Any electrical signal present in a circuit other than the desired signal is known as______________?

A. Noise
B. Distortion
C. Interference
D. All of these

Read More Any electrical signal present in a circuit other than the desired signal is known as______________?
Power Electronics

A 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 these

Read More A rectifier with an external low pass filter is an example of______________?

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