| Post Name | JUNIOR INSTRUCTOR MECHANIC AUTO ELECTRICAL AND ELECTRONICS - INDUSTRIAL TRAINING |
|---|---|
| Department | INDUSTRIAL TRAINING |
| Question Paper Code | 138/2014 |
| Date of Test | 23 August 2014 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
| Which one of the following is called as valence electron in an atom ?
Answer
C. No. of electrons in the outermost orbit
2
In SI unit one coulomb corresponds to a quantity of electricity of about electrons.
Answer
A. 6.24«10!"
3
| Which material is having the negative temperature co-efficient among the following :
Answer
D. Carbon
4
‘The equivalent resistance of the parallel circuit is ___ than the smallest single
resistance.
Answer
B. Smaller
5
When resistance and current are known ______ formula can be applied to find power in watts.
Answer
A. I²R
6
A 250 V lamp has its hol resistance of 625 ohm, Whal is the value current taken by the
lamp ?
Answer
A. O4 A
7
Ina lead acid battery there are 6 positive plates, How many nu mber of negative plates are
there in the same battery ?
Answer
C. 7
8
A capacity of the storage cell is always specified as
Answer
A. Ampere hour rating
9
Which instrument is used to measure the specific gravity of a battery ?
|
Answer
B. Hydrometer
10
Which among the following constitutes the major load for an automobile battery ?
Answer
D. Self starter
11
Cells are connected in parallel:
Answer
D. To increase the current capacity
12
The active material on the positive plates of a fully charged lead acid cell is:
Answer
A. Lead peroxide
13
While Fleming’s right hand rule to find the direction of induced emf, the thumb points towards:
Answer
C. Direction of motion conductor if forefinger points along the lines of flux
14
The material for commutator brushes is generally:
Answer
A. Carbon
15
The armature core of DC generator is usually made of:
Answer
B. Silicon steel
16
The emf generated in a DC generator is directly proportional to:
Answer
D. All of the above
17
The polarity of DC generator can be reversed by:
Answer
B. Reversing field current
18
The polarity of DC generator can be reversed by :
Answer
A. Increasing field current
19
‘The number of brushes in commutator depends on :
Answer
C. Type of Winding
20
Which spring is used to prevent the pinion from striking the flywheel accidentally ?
Answer
B. Sleeve spring,
21
The axial starter works on the principle of _ __ mechanism.
Answer
C. Friction clutch
22
Inan open core ignition coil, the resistance of the winding is of the order of ;
Answer
A. 20-40 ohm
23
The usual value of cam angle for a six-cylinder engine is of the order of :
Answer
B. 26-30
24
Which are the two general ways of spark advance mechanism ?
Answer
A. Centripetal and compression
25
Spark plug “reach” is referred to :
Answer
C. The total length of the spark plug
26
An alternator 15
Answer
B. Hetrepolar machine
27
What will happen to the Hack saw blade, if any short exists in the armature winding when
it is tested by external growler ?
Answer
C. The blade is attracted by the armature winding
28
The illumination of asurfaceis_——————_to the square of its distance from the source.
Answer
B. Equal
29
Which is the pocket size instrument used to measure illuminance ? |
Answer
B. Light meter
30
One watt is equal to:
Answer
A. One volt/One chm
31
Ammeters are always connected in with the load.
Answer
B. Parallel
32
The most commonly used transistor circuit arrangement is configuration,
Answer
D. None of these
33
A Zener diode is used asa __ :
Answer
C. Amplifier
34
What is the ripple factor of a full-wave rectifier ?
Answer
A. 1.21
35
What is the knee voltage of silicon PN junction diode ?
Answer
A. O07 V
36
The addition of trivalent impurities creates __
Answer
C. Valence electrons
37
The function of an alternator in an automobile is to :
Answer
C. Continually charge the battery
38
If the air fuel mixture ignites before the spark takes place at the spark plug, the condition ts
called :
Answer
D. Rumble
39
The air gap between the central electrode and ground electrode of a spark plug is around :
Answer
B. 1.5 mm
40
The starter motor is driven by :
Answer
C. Flat belt drive
41
The ignition coil is used to:
Answer
B. Step down current
42
With the increase of battery temperature, the specific gravity of electrolyte :
|
Answer
A. Increases
43
The starting system includes :
Answer
C. A battery, a starter and a distributer
44
The most accurate ignition system of a spark ignition engine is :
Answer
D. Magneto and Electronic system
45
Which of the following bulb in a car will have the least wattage ?
Answer
B. Stop light bulb
46
In Diesel engine the duration between the time of injuction and the time of ignition is
called :
Answer
D. Ignition period
47
How many cells are used in a 12 V car battery ?
Answer
C. 8
48
The brake warning light warns the driver :
(A) Water in the master cylinder
(8) Air in the hydraulic system
(C) Failure of the primary or secondary circuit of hydraulic system
(D) Power-brake failure
Which device prevents the generation of excessive voltage ?
Answer
D. Voltage regulator
49
The force tending to move the electricity is called :
Answer
B. E.M.F
50
The source of AC supply is :
Answer
A. AC generator
51
The polarity of DC voltage source :
Answer
C. Does not change
52
Cable joints are soldered for :
Answer
D. All the above
53
The voltage induced in a conductor or coil by its own magnetic field is called :
Answer
B. Self induced emf
54
Ina centre tap circuit, if voltage between one end of secondary winding and centre tap is |
300 V peak. Then PIV is :
Answer
D. p) 600 V
55
A capacitor blocks : .
Answer
B. DC but allow AC
56
Ina semiconductor, the energy gap between valence band and conduction band is nearly :
Answer
A. 1leV
57
Reverse resistance of a diode is of the order of :
Answer
D. R) MY
58
The light emitting diode (LED) :
Answer
D. Depends on the recombination of holes and electrons
59
The input and output signals of a common-emilter amplifier are |
Answer
D. In phase
A 9 138 / 2014
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60
Ina transistor with normal bias, the emitter junction :
Answer
B. has low resistance
61
A constant current source supplies a current of 300 mA to a load of 1 kM. When the load is
changed to 100
Answer
C. 300 mA
62
Ina lead acid battery, the level of the electrolyte should be :
Answer
C. Above the level of plates
63
Fuse rating is expressed in terms of :
Answer
B. Current
64
A fuse wire should have :
Answer
C. Low resistance and low melting point
65
The stator of an alternator consist of :
Answer
C. Both
66
The frequency of voltage generated in an alternator depends upon :
Answer
C. Both
67
In general the design of the current regulator is such that its main actuating winding carries
full ;
Answer
B. Generator output
68
The material which reflects all wave length in the spectrum of light appear to be ;
Answer
A. Black to white
69
Glare is caused due to:
Answer
C. Either
70
Luminous flux is : |
Answer
A. The rate of energy radiation in the form of light wave
71
A perfect diffuser surface is one that :
Answer
D. } All of the above
72
Most effective parameter of a filament lamp due to variation in operating voltage is -
Answer
A. Life
73
The lamp is provided with reflector in order to :
Answer
D. All the above
74
Battery driven vehicles :
Answer
D. all the above
A 11 138 / 2014
\P.T.O.|
75
The armature reaction of an alternator influences :
Answer
C. Generated voltage per phase
76
As the speed of an alternator increases :
Answer
A. The frequency increases
77
Which of the following converts electrical energy to radiant heat ?
Answer
D. Incandescent lamp
78
In automobile the sound is produced by horn due to:
Answer
B. Vibrating diaphram |
79
Miniature lamps automobiles are used for :
Answer
D. All of the above
80
The life of a spark plug depends upon ;
Answer
D. All of the above
81
Gautam Buddha was born at :
Answer
B. Lumbini
82
Toxicology is the study of
Answer
D. Poisons
83
Sardar Sarovar Dam is built across the river ‘
Answer
A. Narmada
84
Who was popularly known as the Father of Indian Renaissance ?
Answer
B. Raja Rammohan Roy
85
The book ‘war and peace’ is written by :
Answer
C. Leo Tolstoy
86
Mogadishu is the capital of :
Answer
D. Somalia
87
The parliament of Isreal is known as
Answer
C. Knesset
88
Who won Ezhuthachan Award for 2013 ?
Answer
A. MLK. Sanu
89
Sadhujana Paripalana Sangham was founded by :
Answer
D. Ayyankali
90
Human right day is observed on __ 4
Answer
A. December 10
91
In which amendment did the voting age is lowered from 21 to 18 ?
Answer
B. 61°! amendment
92
St. Thomas came to Kerala in
Answer
B. AD 52
93
The book “Bahuleya Ashtakam” is written by : :
Answer
C. Sree Narayana Guru
94
The capital city of venad kingdom was - —
Answer
B. Kollam
95
Myopia can be corrected by =
Answer
D. Concave lenses
96
The civil disobedience movement was started in a
Answer
A. 1930
97
Who founded the political party called Forward Block ?
Answer
C. Subhash Chandra Bose
98
The term ‘Fourth Estate’ refers to i
Answer
D. Press |
99
The book "Daughter of the East’ is the autobiography of ___ |
Answer
D. Benazir Bhutto
100
Who is known as the Grand Old Man of India ?
Answer
A. Dadabhai Naoroji
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