Converters & Rectifiers

In a three-phase synchronous converter, the ratio of the AC voltage to DC voltage is

A circuit consists of a resistor that is connected in series with a perfect diode. When connected across a \(20\)-V battery the current measured is \(10\) A. However, when connected across a \(30\)-V battery but with reversed polarity, what would be the new current?

The rms value of a half wave rectified current is 10 A. Its value for full wave rectification would be _ amperes.

In a half-wave rectifier, if ac supply is 60 Hz, the ac ripple is__________.

If the line frequency is 60 Hz, the output frequency of a bridge rectifier is

In full-wave rectification, if the input frequency is 60 Hz, then the output has a frequency of ______

Calculate for the dc voltage when the converter consumes 1.5 kW of power at a source voltage of 230 v ac.

If the line frequency is 60 Hz, the output frequency of a bridge rectifier is

The maximum efficiency of a half-wave rectifier is

If a half-wave rectifier is used on 117 V rms ac (house mains), the average dc output voltage is about

An ideal full-wave rectifier with non-inductive load has zero transformation losses. What is the efficiency?

What is a thyratron?

A rotary converter operates at what power factor?

If one of the diode in a bridge full wave rectifier opens, what is the output voltage waveform?

In mercury arc rectifiers, the characteristic blue luminosity is due to which one?

Which of the following is a loss within the mercury arc rectifier chamber?

For the same size, the \(I^2R\) loss of a rotary converter is ____ that of a dc generator.

When a 60 Hz sinusoidal voltage is applied to the input of a half wave rectifier, the output frequency is how much?

In a mercury arc rectifier what will happen if the cathode and anode are interchanged?

Which of the following can start a rotary converter?