In an SCR, the anode current consists of
Answer: C
Both electrons and holes contribute to current.
Enter details here
An RC snubber circuit is used to protect a thyristor against :
Answer: C
No explanation.
Enter details here
In integral cycle control the period of on-off control should be more than mechanical time constant of load
Answer: B
It should be less than mechanical time constant.
Enter details here
Assertion (A): The gate current of an SCR is always in the form of pulses.
Reason (R): The gate losses, in pulse triggering, are low.
Answer: A
Gate current in the form of pulses is commonly used because gate losses are low.
Enter details here
In a dual converter both converters work as rectifiers.
Answer: B
One operators as rectifier and the other as inverter.
Enter details here
A dc chopper V = 500 V feeds an electric fraction dc series motor. The chopping frequency is 400 Hz. The series inductance required to limit the maximum current swing to 10 A is
Answer: B
No explanation.
Enter details here
On load tap changer using thyristors can have a maximum of two taps.
Answer: B
Any number of taps are possible.
Enter details here
A thyristor has its gate current zero. To start conduction the forward voltage must exceed
Answer: B
With zero gate current, conduction can be started only if forward voltage exceeds breakover voltage.
Enter details here
Between which points does UJT exhibit negative resistance characteristics
Answer: A
No answer description available for this question.
Enter details here
As regards single phase dual converter
Answer: B
No answer description available for this question
Enter details here