| Post Name | ELECTRICIAN |
|---|---|
| Department | AGRICULTURE - ERNAKULAM |
| Question Paper Code | 152/2016 |
| Date of Test | 16 November 2016 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Repulsion motor is provided with :
Answer
A. Commutator
2
Whenever a poly phase motor is loaded the :
Answer
B. induced emf in the rotor increases and its frequency rises
3
For three resistance are connected in three phase, the power consumed will be more in
____ connection.
Answer
C. delta
4
Synchronous motors run on leading, power factor when connected in :
Answer
D. over excitation
5
The out put voltage of a solar cell is approximately :
Answer
B. O5V
6
Slip rings are generally made of ;
Answer
A. phosphor bronze
7
The hvdrometer reading of fully charged lead acid battery :
Answer
D. 1.26
8
In induction motor percentage slip is maximum at :
Answer
C. _ stand still condition
9
Economiser is a part of :
Answer
C. thermal PS
10
The crawling in an induction motor is caused by : |
Answer
D. harmonics developed in the motor
11
The commutator segments are placed in :
Answer
A. rotor
12
Reduction in the capacitance of capacitor start motor results in reduced ;
Answer
B. starting torque
13
In an ac circuit the ratio of KW/KVA represents :
Answer
A. power factor
14
The unit of inductance is :
Answer
C. HENRY
15
Ear to ear resistance of human body :
Answer
D. 100 ohms
16
Centrifugal switches is provided for disconnecting the auxiliary winding in
Answer
B. capacitor start motor
17
Transformer core is laminated to :
Answer
B. reduces the eddy current loss |
18
Which type of loss is not common to transformer and rotating machines ? |
Answer
D. windage loss
152/ 2016 4 A
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19
The difference between the synchronous speed and the actual speed of an induction motor is
known as :
Answer
A. . slip
20
Three resistances of 30, 15, 5, ohms are connected in parallel, their combined resistance will
be:
Answer
C. less than 5 ohm
21
Which of the following acts as a depolarizer in a dry cell ? |
Answer
D. manganese dioxide
22
Efficiency of a power transformer is of the order of :
Answer
C. 98%
23
The strongest dia-magnetic material :
|
Answer
B. bismuth
24
The magnitude of torque developed by a three phase induction motor depends upon :
Answer
A. rotor current, rotor emf, rotor pi
25
Rheostat method of speed control of induction motor is used in:
Answer
B. slip ring IM
26
Ina three phase IM the number of poles in the rotor winding are :
Answer
C. equal to stator poles
27
If the air gap of induction motor is increased :
Answer
A. the magnetizing current will increase
28
Isolate fire from the supply of oxygen by blanketing it with foam, sand ete.
Answer
D. smothering
29
What is the condition of ohm’s law ?
Answer
D. constant temperature
30
Power p=
Answer
A. energy/time
31
Moving coil instruments are use :
Answer
C. de only
32
Low resistance means :
Answer
B. 1 ohm and below
33
Unit of resistivity :
Answer
B. ohm-m
34
Kelvin bridge is used for measure :
Answer
B. low resistance
35
Resistivity of eureka at 20°
Answer
C. 4910-8
36
Application of series parallel combination :
Answer
C. power divider
37
An earthing electrode usually made of :
Answer
D. metal plate
38
The color of protective conductor :
Answer
A. green- yellow
39
The color of middle wire of 3 wire DC circuit is: |
Answer
B. black
40
Example of primary cell : |
Answer
C. Voltaic cell
41
The amp-hour efficiency of lead acid cell :
Answer
B. 90 - 95%
42
High rate discharge tester consists of :
Answer
C. low range voltmeter
43
The color of fresh Silica gell is :
Answer
A. Blue
44
Imaginary line joining the two poles of a magnet :
Answer
A. magnetic equator
45
Rotor copper loss of a three phase induction motor is :
|
Answer
A. Fractional slip x input power to the rotor
46
1 Metric horse power is :
Answer
C. 735.6 W
47
The back emf set up in the stator of a synchronous motor will depend on :
Answer
D. rotor excitation
48
The armature Wdg of repulsion motor is excited :
Answer
B. inductively
49
The main disadvantage of shaded pole motor :
Answer
D. all the above
50
The armature flux opposes the main flux is in synchronous machine when the PF is :
Answer
A. unity
51
Dielectric strength of a medium is :
Answer
C. kV/mm
52
Electric intensity is expressed as -
Answer
B. Volt/m
53
Whenever two charges are separated there exist :
Answer
D. emf
152/2016 8 A
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54
Potential inside the hollow charged sphere :
Answer
C. same as on its surface
55
Capacitance in any circuit is opposition to :
Answer
A. voltage
56
The simple measuring instrument used to transfer measurement from the steel rule to
object :
Answer
B. calliper
57
2 ohm resistance having current of 2 A will dissipate the power of :
Answer
A. 8W
58
If the diameter of a wire is doubled keeping the length constant the resistance :
Answer
A. becomes one fourth
59
Which of the following is linear and bilateral element ?
Answer
B. resistor
60
Why accumulators are preferred to pmy cell in motor car ?
Answer
C. they can be recharged
61
Sedimentation occurs in lead acid cell to :
Answer
A. over charging at high rate
62
Kirchhoff's law are valid for :
Answer
C. both linear and non-linear circuit
63
The algebraic sum of all IR drops and emf in any closed loop of a network as per KVL is :
Answer
B. zero
64
Form factor is the ratio of :
Answer
D. rms value/ average value
65
The power factor of the inductive load is :
Answer
B. lagging
66
A choke coil has :
Answer
D. high inductive, low resistance
67
A choke is used for limiting current in :
Answer
A. AC ckt only
68
Impedance at series resonance circuit :
Answer
C. minimum
69
Power factor is defined as :
Answer
C. kKW/kVA
70
2 Wattmeter method measuring power, 2 meters read equal and opposite reading the load
power factor :
Answer
A. zero
71
The secondary current of 400 KVA, 11kV/433V, 3 phase transformer is about ;
Answer
B. 533A
72
The current rating of 400 mm? AYFY cable is :
Answer
D. 335A
73
The maximum efficiency of distribution transformer is : |
Answer
D. half load
74
Unit of luminous intensity :
Answer
C. candela
75
The most efficient lamp :
Answer
A. graphene
76
The larger transformer stepped core arrangement is used to minimize the use of :
Answer
B. copper
77
Examine the Commutator and brushes :
Answer
A. weekly maintenance
78
In DC generator the voltage drop of copper-carbon brush is about :
Answer
B. 2V
79
Alternator voltage regulation is determined by emf method. It is due to:
Answer
B. Behn-Eschenberg
80
The starting torque of capacitor start, capacitor run is about :
Answer
C. 300% of FL torque
81
The first Director General of Archaeological Survey of India :
Answer
B. Alexander Cunningham
82
Name the first Indian to win the World Amateur Billiards Title.
Answer
A. Wilson Jones
83
In which place the Great Victoria Desert is located ?
Answer
D. Australia
84
Name the Kerala ruler who gave his country to Sri Padmanabha as Tripadidana.
Answer
C. Marthanda Varma
85
Who was known as Frontier Gandhi ?
Answer
C. Khan Abdul Ghafar Khan
86
In which year Mountbatten Plan was announced in India ?
Answer
A. 1947
87
Director of the film “Tamas” explaining about partition of India :
Answer
B. Govind Nihalani
88
In which year Sadhujanaparipalanayogam established ?
|
Answer
C. 1907
89
Name the event which is related to Savarna Jatha.
Answer
D. Vaikkom Satvagraha
90
What is the name of spice which is called as “Yavanapriya” ?
Answer
B. Pepper
91
Who was the Viceroy of India during the time of Round Table Conferences ?
Answer
D. Lord Irvin
92
The First person who offer Individual Satvagraha in Indian Freedom Movement :
Answer
A. Vinobha Bhave
93
In Which Year Historic Lahore session of Indian National Congress held ?
Answer
B. 1929
94
Which is the Name of Commission sent to India to enquire about the work of Govt. of India
Act of 1919 ?
Answer
C. Simon Commission
95
Which is the birth place of Mar Kuriakose Elias Chavara ?
Answer
D. Kainakari
96
Pattanam was situated in the banks of river _ aa
Answer
C. Periyar
97
The Yarkungzangbo river in India is known as :
Answer
A. Brahmaputra
98
The Power to Prorogue the Lok Sabha rests with =,
Answer
B. President
99
Who is the Founder of Samatwa Samaj ?
Answer
D. Vaikunda Swamikal
100
The Political Guru of Mahatma Gandhi :
Answer
A. Gokhale
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