Question

The overlap angle of a phase controlled converter would increase on increasing?A supply voltage B Supply frequency C)Load current D source inductance

Answer 1

Answer:

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Answer 2

Let me complete the question for you -

The overlap angle of a phase-controlled converter would increase on increasing

1. supply voltage

2. supply frequency

3. load current

4. source inductance

Of these statements

(A)1, 2 and 3 are correct

(B)2, 3 and 4 are correct

(C)1, 2 and 4 are correct

(D)1, 3 and 4 are correct

Answer:

C is the right answer since the explained overlap angle happens when there is inductance in the supply circuit of a diode (or thyristor) rectifier.

Explanation:

Phase control is a control approach in which the output quantity is modified every half cycle. It offers precise temperature control.

A phase-regulated converter transforms alternating current (AC) to direct current (DC) energy. In other words, it is utilised to convert fixed-frequency and fixed-voltage AC power into variable DC voltage output.

The overlap time refers to the commutation interval during which outgoing and receiving thyristors transact.

The source inductance causes commutation overlap in a phase-controlled ac to dc converter.

The delay angle is the angle at which thyristors are activated following a zero crossing. One pair of thyristors is forward biassed once the supply voltage reaches zero. These SCRs are activated after the delay angle().