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Junior Engineer (Inforamtion Technology) test 2018
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Questions for Junior Engineer (Inforamtion Technology) test 2018 exam
Q:121)
At zero degree kelvin a piece of germanium becomes
A
semiconductor
Incorect !
B
good conductor
Incorect !
C
bad conductor
Correct !
D
None of these
Incorect !
Answer:
C
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Discuss
Q:122)
In a p-type semiconductor the majority charge carriers are
A
electrons
Incorect !
B
holes
Correct !
C
neutrons
Incorect !
D
protons
Incorect !
Answer:
B
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Discuss
Q:123)
The waves relevant to telecommunications are
A
visible light
Incorect !
B
infrared
Incorect !
C
ultraviolet
Incorect !
D
microwave
Correct !
Answer:
D
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Discuss
Q:124)
Intelsat satellite works as a
A
transmitter
Incorect !
B
repeater
Correct !
C
absorber
Incorect !
D
None of these
Incorect !
Answer:
B
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Discuss
Q:125)
The frequency band used for radar relay-systems and television is
A
UHF
Correct !
B
VLF
Incorect !
C
VHF
Incorect !
D
None of these
Incorect !
Answer:
A
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Discuss
Q:126)
n-type of semiconductor is
A
negatively charged
Incorect !
B
positively charged
Incorect !
C
neutral
Correct !
D
None of these
Incorect !
Answer:
C
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Discuss
Q:127)
The technique of collecting information about an object from a distance without making physical contact with it is
A
remote sensing
Correct !
B
remote control
Incorect !
C
remote accessing
Incorect !
D
space shuttle
Incorect !
Answer:
A
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Q:128)
Television was invented by
A
Louis Braille
Incorect !
B
R.A. Milikan
Incorect !
C
Lawrence
Incorect !
D
J.L. Baird
Correct !
Answer:
D
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Discuss
Q:129)
At low temperature, lead behaves as a
A
Semi conductor
Incorect !
B
Super conductor
Incorect !
C
Insulator
Correct !
D
Conductor
Incorect !
Answer:
C
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Discuss
Q:130)
In MIRC, C stands for
A
Code
Incorect !
B
Colour
Incorect !
C
Comuter
Incorect !
D
None of these
Correct !
Answer:
D
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Discuss
Q:131)
Communication system may be
A
electrical
Incorect !
B
electronic
Incorect !
C
optical
Incorect !
D
Any of the above
Correct !
Answer:
D
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Discuss
Q:132)
Long distance short-wave radio broadcasting uses
A
ground wave
Incorect !
B
direct wave
Incorect !
C
sky wave
Incorect !
D
ionospheric wave
Correct !
Answer:
D
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Discuss
Q:133)
In a good conductor the energy gap between the conduction band and the valance bond is
A
narrow
Incorect !
B
zero
Correct !
C
infinite
Incorect !
D
wide
Incorect !
Answer:
B
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Q:134)
An oscillator is nothing but an amplifier with
A
positive feedback
Correct !
B
large gain
Incorect !
C
no feedback
Incorect !
D
negative feedback
Incorect !
Answer:
A
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Q:135)
In a transistor, the base is
A
an insulator
Incorect !
B
a conductor of low resistance
Incorect !
C
a conductor of high resistance
Incorect !
D
an extrinsic semiconductor
Correct !
Answer:
D
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Discuss
Q:136)
The resistance of a p-n junction in forward bias is
A
low
Correct !
B
high
Incorect !
C
zero
Incorect !
D
infinite
Incorect !
Answer:
A
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Discuss
Q:137)
With the rise of temperature, the specific resistance of semiconductor
A
decreases
Correct !
B
increases
Incorect !
C
remains unchanged
Incorect !
D
None of these
Incorect !
Answer:
A
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Q:138)
A diode can be used for
A
amplification
Incorect !
B
modulation
Incorect !
C
detection
Incorect !
D
rectification
Correct !
Answer:
D
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Discuss
Q:139)
A transistor is made of
A
intrinsic semiconductors
Incorect !
B
doped semiconductors
Correct !
C
a metal piece sandwiched between two intrinsic semiconducotors
Incorect !
D
None of these
Incorect !
Answer:
B
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Discuss
Q:140)
Network swithes are sometimes called
A
router
Incorect !
B
bridge
Incorect !
C
multi-port bridges
Correct !
D
None of these
Incorect !
Answer:
C
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Junior Engineer (Inforamtion Technology) test 2018 Overview
Exam Group:
Engineering
State:
Himachal Pradesh
Series:
C
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