Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Power Electronics Questions
In the circuit of figure, the load current when thyristor is off
Thyristors connected in series need :
A single phase bridge type cycloconverter uses eight thyristors.
A single phase full converter can operate in
In a thyristor, the forward breakover voltage
A single phase half wave converter is feeding a resistive load. Output dc power is Pdc and total power delivered to load is Pac then
A relaxation oscillator uses
In a 3 phase semiconverter, the freewheeling diode comes into operation only if firing angle
A current source inverter has simple commutation circuit.
In a full bridge inverter, the waveshape of load current depends on
In the basic series inverter circuit, the source supplies load
A 3 phase fully controlled bridge converter is fed by a 3 phase system having phase voltage v = Vm sin ωt. The firing angle is a. The dc output voltage is
In an ordinary thyristor
A voltage VBB is applied across the terminals of a UJT. The emitter voltage at peak point is
A single phase half wave rectifier circuit has a free wheeling diode. The free wheeling diode will conduct only if
In a 3 phase bridge inverter with 180° mode of operation the numbers of thyristors conducting at one time are
In a thyristors are i = kva. The value of a is
A single phase cycloconverter feeds a resistance heating load. The heating power is provided by
A full bridge inverter is fed by a battery of 30 V. The rms value of output voltage is
Which of the following devices exhibit negative resistance characteristics?
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