Rotating Amplifiers : DC Generators

Metadyne is _________ feedback with respect to main ___________

The quantity which make rotating amplifier applicable in large power levels is/are

The delay of the commutation occurs due base cause of emf induced due to

I. DC shunt motor – Lathe machine
II. DC compound generator – Drilling machine
III. Differentially compounded generator – welding purposes
Above are the applications of the dc machines, but all are not matched correctly. Choose the wrong marking

In rotating amplifiers, armature reaction mmf of the first stage is made to act as field flux for second stage.

The rotating amplifiers are widely used in

Interpoles provide mmf more than armature mmf in a dc machine.

An amplidyne, d-axis flux is always neutralized due to

I. DC shunt motor – variable speed application
II. DC compound generator – constant supply voltage
III. Differentially compounded motor – welding purposes
Above are the applications of the dc machines , but all are not matched correctly. Choose the wrong marking

The cross field machines have

Amplidynes are best applicable in

In amplidynes, the resultant d-axis flux is

Mark the order for the decreasing order of the voltage regulation for dc generators

In cross field rotating amplifiers, there is

The ordinary dc machines are not favourable as amplidynes due to