Cycloconverter

A cycloconverter is a _________

• one stage power converter

• one stage voltage converter

• one stage frequency converter

Applications of cycloconverters include

• speed control of ac drives

• induction heating

• static VAr compensation

• all of the mentioned

The single phase mid-point type cycloconverter uses __________ number of SCRs.

• 4

• 12

• 8

• 6

The single phase bridge type cycloconverter uses __________ number of SCRs.

• 4

• 8

• 6

In the positive half cycle, which of the statement is correct

• P1 and P2 are forward biased

• N1 and P2 are forward biased

• P1 and N2 are forward biased

In the below given cycloconverter circuit, _________ and _________ conduct in one cycle together.

• P1, P2 and N1, N2

• P1, N2 and N1, P2

• N1, P1 and N1, P2

In the positive half cycle, _________ SCRs are forward biased.

• P1, P2, N1, N2

• P1, P2, P3, P4

• N1, N2, N3, N4

• P3, P4, N1, N2

The principle of three phase cycloconverter is to

• add and remove number of SCRs

• vary progressively the firing angle of the devices

• keep the firing angle as 0° for all the devices

In a three phase half-wave cycloconverter ___________

• both inverting and converting action takes place

• only inversion action takes place

• only converting action takes place

The main application of cycloconverter is ______

• traction

• speed control of synchronous motor

• speed control of dc motor

• lift and hoist