W6D2&3

Calculate the voltage regulation of a generator having a no-load voltage of 220 V and a full load voltage of 180 V.

Motors whose speed can be easily controlled.

The running speed of a dc series motor is greatly affected by what factor?

Two factors that affect iron losses in a dc motor.

Calculate the dc-voltage at the output of a half-wave rectifier with a 12Vrms input.

Answer explanation

Vdc = 0.45 Vrms

The dc-voltage of a full-wave bridge rectifier.

Find direct current voltage from a full-wave rectifier with 120 V peak rectified voltage.

Find the ripple factor (kr) of a sinusoidal signal with peak ripple of 4 volts on an average of 30.

Find the required battery capacity needed to operate an equipment of 30 amperes at 5 hours.

Find the required battery capacity needed to operate on electronic equipment with power rating of 200 watts and 10 volts at 6 hours.