| Post Name | TRADESMAN - WIREMAN |
|---|---|
| Department | TECHNICAL EDUCATION - THRISSUR |
| Question Paper Code | 108/2016 |
| Date of Test | 30 August 2016 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
The shape and colour of mandatory sign is :
|
Answer
B. circularshape — white symbol on blue background
2
Open circuit test should be conducted before the ——-—-——-—— to make sure that the
complete circuit included in the teat.
Answer
A. insulation test
3
Which tool is not used for making pilot holes on wooden/metal article?
Answer
D. Rawal plug tool
4
What effect of electric current is used in electric motors?
Answer
B. magnetic effect
5
The method of fire extinguishing by isolating the fire from the supply of oxygen by blanketing
it is known as:
Answer
A. smothering
6
What does S.W.G. stands for?
Answer
D. Standard Wire Gauge
7
Combination pliers are not used for :
Answer
C. hammering
8
Armouring is provided in the cables to safeguard against -
Answer
D. mechanical injury
A 3
[P.T.O.]
9
The floats used in the Buchholz relay is operated by :
Answer
A. mercury switches
10
A source of e.m-f is required in order to:
Answer
C. get the electrons into motion
11
1l. Three resistors are connected in series across a 27 V supply. The second resistor has twice
the resistance of the first, the third resistor has three times the resistance of the second. The
voltage across the third resistor is :
Answer
A. 18V
12
According to Fleming's L.H.R. the angle between the thumb, middle finger and forefinger
must be :
Answer
D. mutually at night angle each other
13
The standard supply frequency in India is:
Answer
B. 50c/s
14
Luminous efficiency of a Fluorescent Tube is :
Answer
C. 60 lumen/watt
15
If two capacitors having capacitance C₁ and C₂ are connected in series, then the total capacitance [Cₜ] of the circuit is:
Answer
B. Cₜ = C₁C₂/[C₁ + C₂]
16
What is the unit of Magneto Motive Force?
Answer
C. Ampere-turns
17
Whenever the magnetic flux linking with a conductor changes, an e.m.f. is induced in that
conductor. The above statement is due to:
Answer
D. Faraday’s law of electromagnetic induction
18
According to Steinmentz Hysterisis law, the hysteresis loss in a material] is proportional to:
Answer
B. B,,"
19
Which of the following is not a diamagnetic material?
Answer
A. Agr
20
Which series MCBs are designed to protect circuits with inductive loads? |
Answer
B. G series MCB |
21
Out of the four metal/alloys given below, one has almost no change in resistance for change in
temperature : |
Answer
C. Manganin
22
As per the recommendation of BIS and NEC, the minimum clearance between the ceiling and
the plane of the blades of the ceiling fan shall not be less than :
Answer
A. 300 mm
23
'Tocontrol one lamp from three places we use :
Answer
D. 2two way switches and | intermediate switch
24
Insimple voltaic cell, zinc plate is amalgamating with mercury to prevent :
Answer
A. Local action
25
Ina parallel plate capacitor, if a dielectric slab is introduced, the p. d. between plates will ; |
Answer
C. imerease
26
Number of light points admissible in one circuit are :
Answer
D. 8 points of 100 w each
27
Bayonet Cap lamp holders cannot be used for lamps having wattage rating more than : |
:
Answer
C. 200 w
28
Other than Nichrome, which of the following materials are used as heating element?
Answer
B. Kanthal
29
One Calory is equal to:
Answer
D. 4.187 joules
30
A 1 KW, 230 V kettle is connected to 15 A plug socket using a power cord rated to carry
15 amperes. What should be the fuse rating of this appliance circuit?
Answer
A. Gamps
31
A heater with short-circuited heating element is tested with a series test lamp, the test lamp
will :
Answer
C. glow normally
32
The unit of luminous intensity is :
Answer
A. Candela
33
The purpose of a resistor connected in series with the heating element of an automatic
| electric iron is to:
:
Answer
B. apply low voltage to pilot lamp
34
In batten wiring, the distance between link clips in vertical runs shall not exceed :
Answer
D. 15cm
108/2016 6 A
35
The process by which an emf induced in a DC generator is known as —————————
method.
Answer
B. dynamic
36
Testing a wiring installation for insulation resistance is to ensure that :
Answer
C. leakage current beyond the stipulated value does not flow to earth
37
In this wiring, to operate 3 lamps in all we require 6 two way switches : 3
|
Answer
A. corridor wiring
38
Fleming's Right hand rule is used to identify the :
Answer
D. direction of induced emf
39
To get sinusoidal wave shape of an alternating current :
|
Answer
A. coil should rotate under uniform field
40
Ina DC machine, the conductors of the armature windings are soldered to commutator at
the :
Answer
B. riser |
41
The inter poles are connected in a de generator :
Answer
A. in series with armature and of same polarity ahead of approaching pole
42
If different quantities of water are heated for the same time by the same capacity heaters,
then the temperature developed at the :
Answer
B. smaller quantity of water will have a higher temperature than the larger quantity
of water
43
The meter used to measure the temperature of furnace is :
Answer
D. pyrometer |
44
Resistors of 5 ohms, 5 kilo ohms, 50 kilo ohms, 5 mega ohms are connected in parallel. Their
equivalent resistance will be very near to:
|
Answer
A. 4.5 ohms
45
A substance that has low retentivity can be used for the manufacture of : )
|
Answer
A. electromagnets
46
When the fluorescent lamp is switched ON there is some vibrating sound from the choke.
This is due to loose :
Answer
C. core
47
How big is the peak amplitude of a sine-wave with an effective value of 220 volts?
Answer
D. D). 3l1yv
48
Which type of formula may be used for any type of circuit?
Answer
A. P = I²R
49
Inacapacitive AC circuit the :
Answer
C. voltage lage-current
50
Ina RL parallel circuit, the opposition to total current is called :
Answer
B. impedance
51
A 4 pole simplex lap-wound armature having 48 slots, each slot has 4 conductors and each
conductor is having resistance of 0.1 ohms. What will be the total armature resistance?
Answer
B. 1.2 ohms
52
Speed of DC shunt motor has to be controlled through the field. Which starter ia moat
suitable in this case?
Answer
A. 4 point starter
53
Avery low value of insulation resistance indicates :
Answer
C. an immediate investigation
:
54
The magnetic feld produced in the stator of a 3 phase induction motor travels at :
Answer
C. synchronous speed
55
The motor which requires least maintenance is :
Answer
A. squirrel cage induction motor
56
When testing the shunt winding of a DC machine for continuity with test lamp of high
wattage, the prods when touched on shunt field terminals give spark. What is the reason?
Answer
D. Shunt field winding has high resistance
57
The main function of NVC generally used with a motor starter is to:
Answer
B. open the main contacts of the starter on failure or reduction of input voltage and
keep it open until manually closed
58
“Eyre No.7" is:
Answer
D. Aluminium soldering flux
A 9 108/2016
[P.T.O.]
59
In a DOL starter, a NVC is connected across a phase and neutral of a three phase, 415 V,
50 Hy supply and works normally. Then the rating of the NVC ought to be :
Answer
C. 240 V, 50Hz AC
60
The starting current of a 220V, 10 HP shunt motor having armature resistance of
0.2 ohm without starter is :
Answer
B. 1100A
61
Ina de generator, if the field circuit resistance is more than field critical resistance, then the : |
Answer
D. generator will not build up voltage
62
Metric Horse Power is equal to:
Answer
Question Cancelled
63
When remote ON and OFF are used, the remote ON button should be connected with the
existing ON button : |
Answer
B. in parallel
64
While running, the rotor frequency in a 3 phase induction motor is equal to:
Answer
C. stator frequency * shp.
65
When a single phase supply is connected across single phase winding of motor, the nature of
| magnetic field produced is :
Answer
D. pulsating in nature
66
When remote push buttons are used START push buttons are wired in —-———————— and
STOP push buttons are wired in —————————— in a starter control circuit. :
Answer
C. parallel, series
67
Ina manual star-delta starter, the stop button connection is in series with the :
Answer
B. no volt coil and overload relay contacts
68
After repeated melting of solder, to compensate the loss it is necessary to add ————_———_
to the solder.
Answer
D. Tin
69
While measuring unknown voltage with a multimeter, it is recommended to select the
—_——$$$— range available.
Answer
D. highest
70
The shunt type ohmmeter will have zero reading at the : |
|
Answer
C. left hand end of the scale |
71
A panel type voltmeter with a pen moving on a graph comes under the category of :
Answer
D. secondary instrument — recording type |
72
PMMC ammeter have uniform scale because :
Answer
C. the deflecting torque varies directly as the current
73
The control force employed in an indicating instrument which can be kept in any position is :
Answer
B. spring control
74
Most of the accidents happen while chipping due to :
Answer
D. any one of the above
A 1l - 108/2016
[P.T.O.]
75
A tong-tester in an instrument having
Answer
C. current transformer with an ammeter
76
A coolant is used for cooling the:
Answer
C. cutting tool
77
As compared to an amplifier, a tranaformer cannot :
Answer
A. increase the output power
78
Crackle test on transformer oil is conducted to find out the presence of :
Answer
B. water
79
Diversity factor is the ratio between minimum actual load and:
Answer
C. maximum load
80
A thermistor is a device whose resistance :
Answer
A. reduces as temperature increases
81
The largest producer of saffron in India :
Answer
A. Jammu and Kashmir
82
Aishwarya Oil field is located in which state of India?
Answer
C. Rajastan
83
Which one of the state is not covered by western Ghats?
Answer
D. Andhrapradesh
108/2016 1Z
84
By eradicating poverty who wished to ‘wipeout every tear from every eye’ :
Answer
B. Jawaharlal Nehru
85
Which country is seperated from British India by Durand Line?
Answer
B. Afghanistan
86
Whois known as the ‘Father of Indian unrest’?
Answer
A. Bala Gangadhar Tilak
87
The Jallian wala Bagh Massacre took place during the viceroyalty of :
Answer
D. Lord Chelmsford
88
The National Highway No 8 connects :
Answer
B. Delhi and Mumbai
89
Which among the following ancient ports of Kerala have identified with modern
Cranganore ?
Answer
D. Muziris
90
Which of the following river originates in Silent Valley?
Answer
C. Kunthi river
91
‘Kunhikannan’was the original name of one of the social reformers of Kerala:
Answer
A. Vagbhatananda
92
Who became the editor of ‘Yuktivadi’ Magazine in 1928?
Answer
C. Sahodaran Ayyappan
93
Which of the following is not correctly matched?
Answer
D. Venganoor - Chattampi Swamikal
94
Indicate the wrong pair among the following :
Answer
A. Kalyana Dayani Sabha — Vaikunda swamikal
95
The book ‘Christumatha Nirupanam' is written by :
Answer
C. Chattampi Swamikal
96
Creation of Micro Units Development Refinance Agency (MUDRA) Bank was announced with
the corpus of :
Answer
B. 20000 Crores
97
Where was the 12" South Asian Games held? :
Answer
A. Guwahati and Shillong
98
National Girl Child Day was observed on:
Answer
C. January 24
99
Which city has been declared the cleanest city in India, as per the Swachh Bharat Ranking?
Answer
D. Mysore
100
Which State is declared as the first digital state in India?
Answer
B. Kerala
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