A single phase ac – dc converter is also known as____________?
A single phase ac – dc converter is also known as____________?
A. rectifier
B. inverter
C. chopper
D. regulator
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COOLMOS device can be used in application up to power range of___________?
COOLMOS device can be used in application up to power range of___________?A. 1 KVA
B. 2 KVA
C. 500 VA
D. 100 KVAThe on – state voltage drop of IGBT consists of__________?
The on – state voltage drop of IGBT consists of__________?A. Drop across the collector junction
B. Drop across the drift region
C. Drop across MOSFET portion
D. All of theseDuring the commutation period in 3 phase converter, overlap time is____________?
During the commutation period in 3 phase converter, overlap time is____________?A. Dependent on the load current
B. Dependent on the voltage
C. Dependent on both the load current and load voltage behind the short circuit current
D. Independent on both the load current and load voltageRise time is defined by the interval when____________?
Rise time is defined by the interval when____________?A. gate current rises from 90 % to 100 % of it final value
B. anode voltage drops from 90 % to 10 % of its initial value
C. anode current rises 10 % to 90 % of its final value
D. both B and CThe output current in PWM DC – DC converters is equal to___________?
The output current in PWM DC – DC converters is equal to___________?A. Average value of the output inductor current
B. Product of an average inductor current and a function of duty ratio
C. Either A. or B.
D. None of theseA thyristor is basically________?
A thyristor is basically________?A. PNPN device
B. A combination of diac and triac
C. A set of SCRs
D. A set if SCR,diac and triac