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December 30th, 2017, 10:16 AM
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Join Date: Mar 2012
Re: KSEB PSC Question Papers

On your demand I will get the PSC, AE (Electrical Stream) exam paper of Kerala State Electricity Board.

Here is the exam paper
1) The CPU of a computer consists of
None of the above
Memory and ALU
INPUT and OUTPUT Unit
ALU and Control Unit
2) The capacitance connected between the I/P and O/P of an amplifier affects its high frequency response due to
MILMAN effect
MILLER effect
COLPIT effect
COLLINS effect

3) Which instrument is used to measure low values of resistance ?
Maxwell Bridge
Kelvin Double Bridge
Wheatstone Bridge
Anderson Bridge

4) An ideal OP-AMP has
infinite gain
infinite input impedance
infinite bandwidth
all of the above

5) The number of flip flops required in a decade counter is
3
4
10
2
6) For stability and economic reasons we operate the transmission line with power angle in the range
10° to 25°
65° to 80°
60° to 75°
30° to 45°
7) The transfer function is defined for
Linear and time-variant system
Linear and time-invariant system
Non-linear and time-variant system
All of the above

8) A dc cumulatively compounded motor delivers rated torque at rated speed. If the series fields is short circuited then the armature current and speed will
decrease and increase respectively
both increase
increase and decrease respectively
both decrease

9) The collector current of transistor is always
less than emitter current
none of the above
greater than emitter current
equal to emitter current

10) Which one of the following is not an image file format ?
image.png
image.pdf
image.jpg
image.bmp

11) When resonance occurs in a circuit, the pf is
1
less than 1
0
greater than 1

12) Two devices commonly used to generate light for fiber optic communication system
LED and LCD
LED and TFT
All of the above
LED and ILD

13) While drawing the phasor diagram of a parallel circuit, which one is taken as the reference
None of the above
Voltage
Power
Current

14) A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor. When the stator frequency is 50Hz, slip of the motor is
5%
4%
2.5%
2%

15) Steady state stability of a power system is improved by
reducing fault clearing time
single pole switching
using double circuit line
decreasing generator inertia

16) Base modulation is used in TV transmission because
All of the above
Large power O/P and better efficiency
High degree of linearity
Power required is small

17) The most commonly used detector in AM receiver is
Coherent detector
Ratio detector
Discriminator
Envelope detector

18) Which one of the following is a synchronous optical network ?
TELNET
INTERNET
DELNET
SONET

19) The Hall effect voltage in intrinsic silicon
changes sign on application of magnetic field
is positive
is zero
is negative

20) The value of coefficient of coupling is always
greater than 1
none of the above
equal to 1
less than 1


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