| 1. | A unijunction transistor has ? | |
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two anodes and one gate
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anode, cathode and a gate
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two bases and one emitter
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anode, cathode and two gates
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Report Question| 2. | A three-phase full-wave half-controlled bridge uses ? | |
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4 SCRs
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3 SCRS
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2 SCRs
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8 SCRs
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| 3. | An SCS has ? | |
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two anodes and two gates
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three layers and four terminals
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four layers and three terminals
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one anode, one cathode and two gates
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| 4. | The operation of a thermocouple is based on ? | |
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Seebeck effect
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Peltier effect
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Thomson effect
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Faraday's laws
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| 5. | Holding current in PNPN diode is the ? | |
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gate current required to keep the device ON
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minimum current to keep the, SCR ON
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current at breakover point
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minimum current to keep the device OFF
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| 6. | Most SCRs can be turned off by voltage reversal during negative half cycle of the A.C. supply for ? | |
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all frequencies
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frequencies upto 200 Hz
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frequencies upto 30 kHz
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none of the above
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