The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?

Related Mcqs:

In a mercury arc rectifier, the anode is usually made of_____________?

A. copper B. aluminium C. silver D. graphite E. tungsten...

In a three-phase mercury arc rectifiers each anode conducts for____________?

A. one-third of a cycle B. one-fourth of a cycle C. one-half a cycle D. two-third of a cycle...

In a rotary converter I2R losses as compared to a D.C. generator of the same size will be___________?

A. same B. less C. double D. three times...

Which of the following AC. motors is usually used in large motor-generator sets?

A. Synchronous motor B. Squirrel cage induction motor C. Slip ring induction motor D. Any of the above...

Which of the following is reversible in action ?

A. Motor generator set B. Motor converter C. Rotary converter D. Any of the above E. None of the above...