Q. A fully controlled bridge converter feeds a highly inductive load such that the load current can be assumed to be constant. The wave shape of input current is

View solution

Q. McMurrary full bridge inverter uses

View solution

Q. In integral cycle control of ac regulator, the input power factor is equal to

View solution

Q. In a 3 phase semiconverter, the output voltage becomes discontinuous for

View solution

Q. In an n stage high frequency series inverter having a time period T, each stage is active for a time interval of

View solution

Q. In a semi converter feeding a resistive load

View solution

Q. A single phase semiconverter is feeding a highly inductive load and has a freewheeling diode across the load. The waveshape of input current is

View solution

Q. The total number of leads in SCR, DIAC and TRIAC respectively are

View solution

Q. In a 3 phase bridge inverter, the gating signals for the three phases have a phase difference of

View solution

Q. When a single phase dual converter is operating in circulating current mode

View solution

Q. To turn off an SCR, it is necessary to reduce its current to less than :

View solution

Q. Class A and class B chopper

View solution

Q. Assertion (A): Light triggering is very suitable for HVDC transmission.

Reason (R): Light triggering has the advantage of complete electrical isolation of gate circuit.

View solution

Q. In a modified series inverter

View solution

Q. A LASCR has

View solution

Q. In Jone chopper, the commutating element

View solution

Q. A dc series motor is coupled to a load whose torque is proportional to speed. It is fed by a single phase ac supply through a full converter. When speed is 500 rpm, firing angle is 45°. It is desired to raise the speed. It will be necessary to

View solution

Q. When an SCR is reverse biased

View solution

Q. The load circuit of a single phase full bridge inverter

View solution

Q. The number of layers in a Shockley diode are

View solution