Thyristors Part 2
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Attempt Free Thyristors Part 2 Here. Read The Important Electrical MCQ From Below.
(1) is inexpensive
(2) is mechanically strong
(3) has small leakage current
(4) is tetravalent
Answer
2. An SCR is a solid state equivalent of …
(1) Triode
(2) Pentode
(3) Gas-filled triode
(4) Tetrode
Answer
Thyristors Part 2
3. An SCR behaves as a …………… switch
(1) Unidirectional
(2) Bidirectional
(3) Mechanical
(4) None of the above
Answer
4. An SCR has three terminals viz. …
(1) cathode, anode, gate
(2) anode, cathode, grid
(3) anode, cathode, drain
(4) none of the above
Answer
5. An SCR is made of
(1) Germanium
(2) Silicon
(3) Carbon
(4) None of the above
(a) 1 only
(b) 2 only
(c) 1 & 2 only
(d) 1,2,3 only
Answer
Thyristors Part 2
6. An SCR is also known as
(1) Triac
(2) Diac
(3) Unijunction transistor
(4) Thyristor
Answer
7. In the normal operation of an SCR, anode is …….. with respect to cathode
(1) at zero potential
(2) negative
(3) positive
(4) none of the above
Answer
8. An SCR combines the features of ……..
(1) a rectifier and resistance
(2) a rectifier and transistor
(3) a rectifier and capacitor
(4) none of the above
Answer
Thyristors Part 2
9. In normal operation of an SCR, gate is ………. with respect to cathode
(1) positive
(2) negative
(3) at zero potential
(4) none of the above
Answer
10. When SCR is OFF, the current in the circuit is ………
(1) exactly zero
(2) small leakage current
(3) large leakage current
(4) none of the above
Answer
11. The control element in an SCR is …….
(1) cathode
(2) anode
(3) anode supply
(4) gate
Answer
Thyristors Part 2
12. The normal way to turn on an SCR is by…….
(1) Breakover voltage
(2) Appropriate anode current
(3) Appropriate gate current
(4) None of the above
Answer
13. An SCR is turned off by ……..
(1) Reducing anode voltage to zero
(2) Reducing gate voltage to zero
(3) Reverse biasing the gate
(4) None of the above
Answer
