Previous Exams

Jr. Instructor(Electrician),Industrial Training-2017

 

Time Remaining :
1. The total resistance of 30 Ohm resistor and a 15 ohm resistor connected in parallel
10 Ohms

45 Ohms

150 Ohms

60 Ohms
2. Hack saw blades are made up of steel
Mild

High Carbon

Stainless

High speed
3. Which type of chisel you would select for squaring the corners?
Web chisel

Diamond chisel

Cross chisel

Hald round chisel
4. Which type of shape is used for displaying the 'No Smoking' prohibition sign?
Circular

Rectangle

Triangle

Square
5. What is the commercial unit of electrical energy?
Watt hour

Mega watt hour

Watt second

Kilowatt hour
6. As per Ohm’s law state that in a closed electric current is directly proportional to:
Resistance

Voltage

Temperature

Specific resistance
7. Three resistance 1 K Ohm,2 K Ohm and 7 K Ohms are connected in series with a 30 V supply.The total resistance and current are:
10 K Ohms,3 A

10 K Ohms,300mA

5 K Ohms,3mA

10 K Ohms,3 mA
8. A material that can be magnetized only very slightly is called:
Diamagnetic

Tara magnetic

Ferromagnetic

Magnetic
9. The S.I.Unit of the flux density of magnet is:
Gauss

Lines/cm2

Tesla

Webber/meter
10. In a 3 phase balanced load,the current in the neutral wire is:
Zero

3xIL

2xlPh

IL
11. The metal used for the control spring in an electrical instrument is:
Steel

Nichrome

Hard drawn copper

Phosphor-bronze
12. A moving coil instrument works on:
Electromagnetic effect

Heating effect

Chemical effect

Electrostatic effect
13. The working principle of dynamo meter instruments is similar to that of:
AC induction motor

Lenz’s law

D.C.Motor

Faraday’s laws of electromagnetic induction
14. The rotating speed of the magneto type megger is:
180 rpm

160 rpm

150 rpm

120 rpm
15. The current transformer steps up:
Voltage

Current

Power

Energy
16. The unit of frequency is:
Ohm

Joules

Hertz

Watts
17. If the power factor of a circuit is unity,its reactive power is:
Zero

Unity

Maximum

Minimum
18. The capacitor is connected in a ceiling fan is:
Series to the running winding

Parallel to the running winding

Parallel to the starting winding

Series to the starting winding
19. The reciprocal of resistance is:
Henry

Conductance

Coulomb

Impedance
20. The inner tube of high pressure MV lamp has:
Halogen gas

Helium gas

Argon gas

Nitrogen gas
21. Two 250 V,100W lamps when connected in series to 250 V,supply will light:
Bright

One dim and other bright

Do not glow

Dim
22. According to the N.E.Code,the colour code for the neutral is:
Black

Red

Blue

Green
23. The process by which an e.m.f induced in a DC generator is called:
Static

Chemical

Dynamic

Thermal
24. The material used for split rings is:
Gold

Iron

Aluminium

Copper
25. The armature core is laminated to minimize the:
Cost

Eddy current loss

Hysteresis loss

Weight
26. The conductors of the armature winding are soldered to the commutator at the
Segment internally

Segment directly

Riser

Brushes
27. In a four pole simplex lap-wound armature the number of parallel paths are
4

6

2

8
28. To get spark less commutation,we use:
Copper brushes

Compensating winding

Armature lamination

Inter poles
29. The speed of a DC series motor at no load is:
Zero

3600 rpm

Infinite

3000 rpm
30. Which application requires a high starting torque?
Lathe machine

Locomotive

Reciprocating pump

All the above
31. A step-up transformer increases:
Current

Power

Frequency

Voltage
32. The purpose of oil in the transformer is to:
Lubricate

Insulate and cool

Lubricate and cool

Cool
33. The frequency used in India is:
50 Hertz

60 Hertz

120 Hertz

75 Hertz
34. The output of an alternator is rated in:
KW

HP

B.H.P

KVA
35. Which of the following is not a part of a rotor?
Core

Shaft

End plate

Winding
36. The function of flux in soldering is:
To clean the dirt on the soldering surface

To lower the melting temperature of solder

For easy flow of solder into the joint

All the above
37. One mega ohm resistance is equal to
100 K Ohm

1000 K Ohm

10000 K Ohm

100000 K Ohm
38. The temperature co-efficient of resistance of a semi conductor is:
Zero

Extremely high

Positive

Negative
39. Which element is used as Semi conductor material?
Copper

Plastic

Silicon

Brass
40. The rectifier circuit depends on the operation of:
Coil

Resistance

Transistors

Diodes
41. A half wave rectifies is suitable only for:
Car radies

Variable speed

Battery charging

Electroplating
42. The R.M.S.voltage at the transformer secondary is 6 volts.It's peak value is
8.5 V

9.6 V

7.2 V

12 V
43. The base materials used for making PCB's are:
Ceramic,mica

Rubber,ebonite

Fiber,glass epoxy

All the materials mentioned above
44. A transistor has:
One PN Junction

Two PN Junction

Three PN Junction

Four PN Junction
45. A transistor is a -----------operative device
No hage

Current

Both Voltage and current

None of the above
46. An SCR is a:
Transistor

Alternator

Semi-conductor device

Heat regulating device
47. In one of the following domestic appliance universal motor is used:
Food mixer

Grinder

Fan

Washing machine
48. For safety,the fuses should be placed on:
Any wire

Earth wire

Neutral cable

Phase cable
49. The maximum permissible load in a lighting sub circuit is:
880 W

850 W

800 W

750 W
50. Copper losses in a transformer is that power loss caused by:
Resistance

Eddy current

Counter E.M.F

Magnetic field reversal
51. Hysteresis loss in a transformer is reduced by using the proper:
Number of coils

Material in the core

Load

Lamination thickness
52. Transformer is used to change the value of:
Frequency

Power

Power

Power factor
53. The colour of dry silica gets is:
Pale yellow

Pale pink

Plae green

Blue
54. Thermal overload relay is provided in starter to protect the motor against
Excess current

Short circuit

Open circuit

Low voltage
55. Inching operation is also called as:
Starting

Stopping

Jogging

Breaking
56. A slip ring induction motor has:
Wound rotor

Short circuited rotor

Double cage motor

None of the above
57. In a shaded pole single phase motor the revolving field is produced by:
Capacitor

Shading ring

Regulator

Winding
58. In distributed winding all the coils will live the same:
Pitch

Width

Length

Thickness
59. The tip of the soldering iron is made of:
sted

Copper

Tin

Chromium
60. The type of insulator used in stay wire is:
Pin type

Suspension type

Shackle type

Egg type insulators
61. While using wooden poles the span should not exceed-meters.
40-50 m

50-8 m

60-110 m

100-300 m
62. Which of the following gates a high output with all the input high?
NOT

OR

AND

NOR
63. Epoxy compound used with underground cable does not need:
Cooling

Heating

Stirring

Mixing
64. The chance of occurrence of corona are maximum during:
Dry weather

Winter

Hot summer

Humid weather
65. The critical value of surge impedance of a long transmission line is:
50 Ohm

100 Ohm

150 Ohm

200 Ohm
66. The conductor carries more current on the surface in comparison to its core.The phenomenon is called the :
Corona

Lenz’s law

Ferranti effect

Skin effect
67. The largest size hydro electric unit in India is:
500 MW

165 MW

350 MW

90 MW
68. For high head and low discharge,the water turbine used in:
Kaplan turbine

Francis turbine

Francis turbine

Propeller turbine
69. Control rods used to nuclear reactors are made of:
Boron

Zirconium

Beryllium

Lead
70. The fraction of a solar collector is of converting solar energy into:
Radiations

Electrical energy directly

Kinetic energy

Thermal energy
71. The digits used in binary number system are:
0,0

0,1

1,2

2,2
72. Fleming’s right hand rule is to identify the:
Direction of flux

Direction of rotation of a generator

Direction of current in a motor

Direction of induced e.m.f
73. Which type of DC generator is used for welding generator set?
DC differential compound generator

DC cumulative compound generator

DC series generator

DC shunt generator
74. Poly face induction motor is usually:
Self starting

Slow starting

Not self starting

None of these
75. In a 3 point starter the No Volt Coil(NVC)is connected in series with:
Armature

Field

Supply

Starting resistor
76. A wire gauge is used to measure
Diameter of a wire

Length of a wire

Thickness of insulation layer

Area of wire
77. Coolant is used for cooling the
Job only

Machine

Hot chips

Cutting tool
78. In which type fire both foam and dry powder fire extinguishers can be used?
Class’A’Fire

Class’B’Fire

Class’C’Fire

Class’D’Fire
79. Which one of the materials of the atom contains only four free election?
Gold

Copper

Germanium

Mica
80. Negative temperature cost-efficient among the following materials:
Tungsten

Carbon

Gold

Silver
81. The year in which the fourteen Indian Commercial Banks were nationalised:
1969

1976

1982

1991
82. The Article of Indian Constitution which endows special status to the state of Jammu and Kashmir:
356

370

357

365
83. National Academy of Administration,Mussoorie is named after which of the following statesman?
Jawaharlal Nehru

Sardar Vallabhai Patel

Lal Bahadur Shastri

Indira Gandhi
84. The headquarters of Zoological Survey of India is situated at:
Kolkata

Bengalooru

Mumbai

New Delhi
85. Whose Autobiography is ‘THE INDIAN STRUGGLE’?
Maulana Abdul Kalam Azad

M.A.Ansari

Subhash Chandra Bose

B.R.Ambedkar
86. National Training Centre for Dogs is situated in:
Indore

Gwallior

Bhopal

Nagpur
87. One of the tributaries of River Cauvery orginates from Kerala.Which of the following
Neeleswaram

Bhavani

Kabani

Pambar
88. Who was the first President of Jathinashini Sabha,an association for abolition for caste system in Kerala?
Mitavadi Krishnan

K.Kelappan

Swami Agamananda

Sahodaran Ayyappan
89. Ente Jeevitha Smarangal is the autobiography of:
K.P.Kesava Menon

E.M.S.Nampoothiripad

Mannath Padmanabhan

P.Krishnapillai
90. Who is the captain of the Indian Kabbadi Team which won the Kabbadi Team which won the Kabbadi World Cup 2016?
Ajay Thakur

Anup Kumar

Nitin Tomar

Anil Razdan
92. Who was the last Diwan of the Princely State of Cochin?
R.K.Shanmugham Chetti

C.P.Karunakara Menon

P.S.N.Unnithan

A.F.W.Dixon
93. River Churni referred to in Kautilyas’Arthashastra is identified with which of the following rivers in Kerala?
Bharatapuzha

Pampa

Periyar

Chaliyar
94. Which constitutional amendment upheld the power of Parliament to amend the fundamental rights?
22nd Amendment

42nd Amendment

63rd Amendment

72nd Amendment
95. The only fresh water lake in Kerala:
Vembanad

Kayamkulam

Shastamkotta

Aakkulam
96. The last visit of Mahatma Gandhi to Kerala was in connection with which of the following events?
1920 Khilafat Agitation

1942 Quit India

1936 Temple Entry Proclamation

1931 Guruvayoor Satyagraha
97. Pasteur Institute of India,one of the leading institutes in the production of Anti-rabbis vaccine is located at:
Ooty

Coonoor

Kodaikanal

Kothagiri
98. NAURA,a place which finds mention in ancient historical records of Kerala stands for:
Varkala

Kollam

Kollam

Kodungalloor
99. The Union Railway Minister who presented the most number of Railway budgets:
Madhav Rao Sindhia

Laloo Prasad Yadav

C.K.Jaffer Sherif

Jag Jeevan Ram
100. Silver Revolution is related to:
Milk

Steel

Egg

Fish