A. CB and fuse.
B. Heat sink.
C. Snubber circuit.
D. Voltage clamping device.
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
A Triac has three terminals viz ___________?
A. Drain, source, gate
B. Two main terminal and a gate terminal
C. Cathode, anode, gate
D. None of the above
An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be_____?
A. 1500 A.
B. 6000 A.
C. 2121.32 A.
D. 4242.64 A.
The typical value of SCR for modern alternator is____________?
A. 1.5.
B. 0.5.
C. 1.0.
D. 1.2.
A substance whose molecules consist of dissimilar atoms is called____________?
A. semi-conductor
B. super-conducto
C. compound
D. insulator
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