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Free tnpsc model questions Online Test - MeritNotes
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Online Exam
No. of Questions :10
Remaining Time :
1. Sinusoidal oscillator generate
(a)
sine wave
(b)
cosine wave
(c)
square wave
(d)
all the above
2. _____ are used for instrument displays, calculators and digital watches.
(a)
Light emitting diodes
(b)
PN Junction diodes
(c)
Zener diodes
(d)
All the above
3. A transistor can be operated in how many types of circuit connections?
(a)
1
(b)
2
(c)
3
(d)
5
4. _____ is called AVO meter.
(a)
Multimeter
(b)
Galvanometer
(c)
Voltmeter
(d)
Ammeter
5. Pick out the pentavalent atom from the following.
(a)
Antimony
(b)
Aluminium
(c)
Boron
(d)
Indium
6. The energy of S or P level is of the order of
(a)
ev
(b)
MeV
(c)
mev
(d)
GeV
7. Germanium crystal has how many valence electrons?
(a)
2
(b)
4
(c)
6
(d)
8
8. _____ is the most commonly used semiconductor.
(a)
Germanium
(b)
Silicon
(c)
Both a and b
(d)
Neither a nor b
9. Collector current is usually measured in
(a)
milliamperes
(b)
microamperes
(c)
amperes
(d)
nanoamperes
10. The heavily doped region in a transistor is
(a)
base
(b)
collector
(c)
emitter
(d)
all the above