| Post Name | LINEMAN - ELECTRICAL WING |
|---|---|
| Department | PUBLIC WORKS - ELECTRICAL WING -KLM / IDK / EKM / MPM / KKD / KNR / KGD DISTRICTS |
| Question Paper Code | 055/2016 |
| Date of Test | 21 April 2016 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
The unit of solid angle is
Answer
B. steradian
2
What is the temperature co-efficient value of aluminum at 20° Celsius ?
Answer
A. 40.3x 10~4
3
How to increase the current range of a meter ?
Answer
C. Alow resistance connected in parallel
4
One ampere-hour is equal to
Answer
B. 3600 Coulombs
5
Unit of M.M.F. is
Answer
D. Ampere turns
6
Which of the following rule is used for find the direction of induced e.m.f. ?
Answer
C. Fleming's right hand rule
7
The lifting power of a magnet is
Answer
A. B’A/2H,
8
Who discovered the neutron ?
Answer
D. Chadwick
A 3
9
The voltage of a simple voltaic cell is
Answer
B. 1.08 V
10
The speed of electricity is
Answer
A. 2,97,842 km/s
11
Which type of M.C.B. is used in air-conditioners ?
Answer
B. G series
12
Which of fire extinguisher is used on electrical fire ? |
Answer
C. halon type
13
Nichrome is widely used for
Answer
D. heater coils |
14
Whatis the di-electric strength in k.v./m.m. of asbestos at 20°C ?
|
Answer
B. 42
15
Value of one kilowatt-hour is
Answer
A. Joules
16
Asolenoid is defined as an electromagnet
Answer
C. having more axial length than diameter
17
Two Wattmeter method is used to measure the power in load. |
Answer
D. balanced and un-balanced load |
A is .
18
Potential transformer and current transformer are
Answer
B. instrument transformer
19
Inter-poles are provided to
Answer
D. improve commutation
20
Which of the following method is used to control the speed of shunt motor below
than its rated speed ?
Answer
B. armature control
21
The starting winding is opened by a centrifugal switch when the motor has come up to about
Answer
A. 75% of synchronous speed
22
Outer cage of squirrel cage motor is made up of
Answer
Question Cancelled
23
In star connection the supply voltage is reduced as
Answer
A. 1/√3 times
24
In the three-point starter the hold ON coil is connected in the
Answer
B. field circuit
|
25
To magnetize a steel is difficult because of its
Answer
D. low permeability
A +
‘
26
One Farad is equal to
Answer
C. One Coulomb/volt
27
The jarizer is used in dry cell is
Answer
A. MnO
28
Two batteries each of open circuit voltage 2 v and internal resistance of 2Ohm
are connected in parallel to supply a load of 2 Ohm, the current supplied by the
battery is
Answer
Question Cancelled
29
The de of the acid in lead acid battery gives of an indication of |
Answer
C. the charge of the battery
30
The minimum insulation resistance of a water heater is
Answer
B. 1 megaOhm
31
When the generator is loaded
Answer
A. Brushes are kept in M.N.A. for sparkles commutation
32
A24Ohm and 8 Ohm resistors are in parallel have a combined resistance of
Answer
Question Cancelled
33
The percentage of carbon in high speed steel is
Answer
C. 0.75to 1%
34
The control force employed in an indicating instrument, which can be kept in
any position is
Answer
D. spring control
35
The deflecting control of a moving iron instrument is directly proportional to the
Answer
Question Cancelled
36
If the meter constant mentioned in the meter is 1500 revolution/K.W.H., in one
revolution, the energy consumption is
Answer
A. 40 watt-minutes
37
An unknown D.C. voltage is to be measured, which measuring range will you
select first ?
Answer
A. 500V
38
In three phase circuits the formula for calculating power factor by two wattmeter method is
Answer
B. tan φ = √3(W₁ − W₂)/(W₁ + W₂)
39
The resistance of the starting winding
Answer
C. is higher than the running winding
40
The pu’ of the capacitor in a fan is to be
|
Answer
D. give phase shift
41
AH.P.M.V. lamp gives |
Answer
Question Cancelled
42
At the time of starting the sodium vapor lamp gives the color of light is |
Answer
B. reddish color |
43
Centre tapping of the high voltage transformer must be earthed to
Answer
C. provide safety of operator
44
The possible minimum reading which can be taken by 0-25 m.m. of an outside
micrometer is
Answer
A. 0.01 m.m.
45
The bending angle of the hard drawn bare copper conductor for britannia joint
should be
Answer
B. 90°
46
In soldering aluminum cables with a ferrule joint it is advisable to use
Answer
B. acopper ferrule
47
The distance between clips in horizontal runs shall not exceed
Answer
A. 10c.
48
For pipe earthing the minimum internal diameter of galvanized iron or steel pipe
required is
Answer
D. 38m.m.
49
According to |. E. rules the leakage current in an installation should not exceed
one by th part of the maximum current supplied to the installation.
Answer
D. 5000
50
The conductors of the armature windings are soldered at the commutator
Answer
C. riser
51
Asimple method of increasing the voltage of a D.C. generator is
Answer
B. increase the speed of rotation
52
The existence of residual magnetism is not important if the D.C. generator is
not connected as a
Answer
D. separately excited generator
53
The sodium vapor lamp operates in best efficiency at
Answer
A. 300°C
54
Large value of air gap in an induction motor results in
Answer
B. increased over load capacity
55
Which capacitor is used for starting of a single phase motor ?
Answer
Question Cancelled
56
No-load current of an induction motor is approximately
Answer
B. 40% of full load current
57
Chatter in an A.C. relay magnet can be eliminated by using |
Answer
D. shading coil
58
Which kind of bearing is used when a motor is to be mounted horizontally ?
Answer
A. radial
59
The rotor of a motor runs at 1410 R.P.M. and the synchronous speed is 1500 R.P.M. What is the slip of the motor ?
Answer
D. 6
60
Turbo alternators usually have
Answer
A. 2 pole:
61
Athree phase, 50 Hz. Induction motor has 8 poles and full load slip is 2.5% find
rotor spee:
Answer
D. 731 R.P.M.
62
Salient pole type rotor construction is usually provided in alternators used in
Answer
C. hydro er stations
63
Flow from a reciprocating pump will be
Answer
A. pulsating
64
In practice earth is chosen as a place of zero potential because
Answer
D. has almost constant potential
65
Any charge given to the battery when taken off the vehicle is called
Answer
D. float charge
66
The most efficient form of damping employed in electrical instruments is
Answer
C. eddy current
67
The reactance offered by a capacitor to altemating current of frequency of 50 Hz
is 10 Ohm if frequency is increased to 100 Hz the reactance becomes
Ohm.
Answer
B. 5Ohm
68
Power factor of high speed motor compared to a low speed motor will be
Answer
A. high
69
The normal size of circular sheet steel discs of an armature core of D.C.
generator is
Answer
C. 0.5mm. —
70
A750 watts load is given to the three phase energy meter for 15 minutes and
the meter constant is 1200 revolutions/K.W.H. Calculate the number of revolutions
Answer
D. 225
71
What is the metal used to prevent the burning of the make and brake point of
thermostat in an electric iron ?
Answer
A. silver
72
Maxwell-Wein bridge is used for measuring
Answer
C. inducta'
73
The decibel is a measure of
Answer
D. power level
74
Non-sinusoidal waveforms are made up of
Answer
A. different sinusoidal waveforms
75
There are no transients in pure resistive circuits because they.
Answer
B. have no stored energy
|
76
An.unbalanced system of three-phase voltages having RYB sequence actually
consists of
Answer
D. all of the above
77
Transformer oil serves the functions of
Answer
A. insulation and cooling
78
In scott connections the teuser transformer has tapping on
Answer
C. 86% of primary
79
The line voltage of a delta-connected three-phase circuit is 415 V. The phase
voltage is
Answer
D. 415V
80
To keep the frequency constant on increased loads the speed of the alternator
should be
Answer
Question Cancelled
81
The Constitution of India borrowed the idea of Directive Principles from
Answer
D. Ireland
82
The Indian Constitution has been divided in to
|
Answer
B. 22 Chapters
83
Which of the following words were added to the preamble through an amendment
in the Constitution carried out during emergency in 1976 ?
Answer
A. Socialist and Secular
84
The Panchayat Raj was introduced in India in
|
Answer
C. 1959
85
Which one of the following subjects is in the Concurrent List ?
Answer
D. Criminal laws
86
Who started CMS Press in 1821 ?
Answer
A. Benjamin Baily
87
The First Keralite who had participated with the activities of Indian National
Congress was
Answer
C. G.P. Pillai
88
The famous play ‘Pattabakki’ was written by
Answer
B. K. Damodaran
89
Who moved a resolution requesting the Congress leadership to take the initiative
to work for eradication of untouchability in Kerala at ‘Kakinada’ Session of 1923 ?
Answer
D. T.K. Madhavan
90
Ayyankali started Sadhujanaparipalanasangham in
Answer
Question Cancelled
91
‘The Wagon Tragedy’ of the Malabar rebellion took place in
|
Answer
Question Cancelled
92
The ‘Pattini Jatha’ was organised by
Answer
B. A.K. Gopalan and K.P.R. Gopalan
93
Who among the following is associated with ‘Keezhariyur Bomb Case’ of 1942 ?
Answer
A. K.B. Menon
94
Who among the following participated in Dandi March of 1930 with Mahatma
Gandhi ?
Answer
C. Krishnan Nair
95
The poem ‘Jatikkummi’ is written by
Answer
D. Pandit Karuppan
96
Shortly before the general election in 1951, Dr. B.R. Ambedkar decide to contest
the election under the banner of
Answer
B. Scheduled Caste Federation
97
Name the military operation of Israel against Gaza in 2014.
Answer
D. Operation protective edge
98
The Govt. of Tamil Nadu decided to celebrate A.P.J. Abdul Kalam's birthday as
Answer
B. Youth Renaissance Day
99
Whois kn as ‘Mellisai Mannan’ ?
Answer
C. M.S. Viswanathan
100
Chtistopher Lee is associated with
Answer
A. Ci
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