Industrial Electronics Multiple Choice Questions with Answers
In this Article, you can find Industrial Electronics Subject related all the objective type questions which will useful for various exams.
Q. 1 The ________ is the four layer diode with an anode and a cathode gate?
a) SCR
b) SCS
c) SBS
d) SUS
Answer : b
Q. 2 A Diac has _________ .
a) One P-N Junction
b) Two P-N Junction
c) Three P-N Junction
d) No Junction
Answer : b
Q. 3 The UJT has ________ .
a) One P-N Junction
b) Two P-N Junction
c) Three P-N Junction
d) No Junction
Answer : a
Q. 4 The Triac is a ________ Switch.
a) Mechanical
b) Unidirectional
c) Bidirectional
d) Electrical
Answer : c
Q. 5 The two SCRs in Parallel is equivalent to ________ .
a) Diac
b) UJT
c) Triac
d) Transitor
Answer : c
Q. 6 Which of the following conducts current in both the directions when turned on ?
a) SCR
b) Diac
c) SCS
d) SUS
Answer : b
Q. 7 The SCR has both the features of ________
a) a Rectifier and Transistor
b) a Rectifier and Capacitor
c) a Rectifier and Inductor
d) a Rectifier and Resistor
Answer : a
Q. 8 When the SCR is turned off, the current in the circuit is
a) Exactly Zero
b) Small leakage current
c) Large leakage current
d) thermal current
Answer : b
Q. 9 The UJT is also called as ________ diode .
a) a Rectifier
b) a switching diode
c) Single based
d) Double based
Answer : c
Q. 10 The peak point and valley point of UJT emitter characteristics lies in which region?
a) Cut-off
b) Saturation
c) Negative Resistance
d) Positive Resistance
Answer : c
Q. 11 The SCR has three terminals which are ________.
a) Anode, Cathode, Drain
b) Drain, Source, Gate
c) Anode, Cathode, Grid
d) Cathode, Anode, Gate
Answer : d
Q. 12 The equation for intrinsic Stand-off ratio (η) of UJT is _________.
a) RB1 / (RB1 + RB2)
b) RB1 + RB2
c) (RB1 + RB2) / RB1
d) (RB1 + RB2) / RB2
Answer : a
Q. 13 An SCR is a _________ triggered device.
a) Current
b) Voltage
c) Noise
d) Power
Answer : a
Q. 14 The full form for PUT is
a) Programmable Universal Transistor
b) Programmable Unijunction Transistor
c) Pulse Unijunction Transistor
d) Pulse Universal Transistor
Answer : b
Q. 14 Which of the following areas where GTO is applicable?
a) Multi vibrators
b) Counters
c) Pulse Generators
d) All of the above
Answer : d
Q. 15 The UJT may be used as
a) Amplifier
b) Rectifier
c) Saw tooth Generator
d) Multivibrator
Answer : c
Q. 16 When SCR is turned on, voltage across it is ____.
a) 0.5 V
b) 0.1 V
c) 5 V
d) 1 V
Answer : d
Q. 17 Which is the control element of an SCR ?
a) Gate
b) Drain
c) Anode
d) Source
Answer : a
Q. 18 When the firing angle of SCR increased, its output becomes ______.
a) decreases
b) increases
c) remains unchaged
d) doubles
Answer : a
Q. 19 When the temperature increases, the intrinsic stand off ratio
a) increases
b) decreases
c) constant
d) doubled
Answer : c
Q. 20 Which device do not have gate terminal ?
a) FET
b) Diac
c) SCR
d) Triac
Answer : b
These are most asked industrial Electronics MCQS with answers and most important industrial electronics interview and Viva question.
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