| Post Name | JUNIOR INSTRUCTOR- MECHANIC REFRIGERATION AND AIR CONDITIONING |
|---|---|
| Department | INDUSTRIAL TRAINING |
| Question Paper Code | 067/2018 |
| Date of Test | 29 June 2018 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Which one of the following is not a basic features of the Indian Constitution ?
Answer
C. Presidential form of Government
2
The number of Fundamental Rights Constitution originally consists of
Answer
C. 7
3
The first, Right to Information application submitted by Shahid Raza Burney to a police in
Answer
A. Pune
4
In which year National Rural Employment Guarantee Yojana (NREGY), scheme was renamed as MNREGA ?
Answer
Question Cancelled
5
The CMS press, Kottayam, was established in 1821 by
Answer
B. Rev. Benjamin Bailey
6
‘Make Namboodhiri a human being’ was the slogan of
Answer
D. Yogakshema Sabha
7
The movement that led to the formation of the first Public Service Commission in the state of Travancore was
Answer
C. Nivarthana Agitation
8
Which Patriot was the brain behind Malayali Memorial Petition submitted to Maharaja of Travancore ?
Answer
A. G.P. Pillai
9
Which is the paper edited by C. Krishnan to campaign vigorously against untouchability ?
Answer
B. Mitavadi
10
‘Ritumati’, the drama portrayed the cloistered life led by Namboothiri women, written by
Answer
B. M.P. Bhattathiripad
11
The freedom fighter belong to famous Palakkad Anakkara Vadaketh family
Answer
C. A.V. Kuttimalu Amma
12
Who is the social reformer voiced against caste system and untouchability through the ‘Jathikummi’ ?
Answer
D. Pandit K.P. Karuppan
13
The Kerala leader attended Coconada (Kakinada) congress session in 1923 and enlisted congress support in his fight for social justice
Answer
D. T.K. Madhavan
14
‘Ente Poorvakala Smaranakal’, the work written by the political leader
Answer
A. A.K. Gopalan
15
In which year G. Sankara Kurup got the Bharatiya Gnanapidham Award ?
Answer
A. 1968
16
Who is the present CEO of Rajya Sabha T.V. ?
Answer
B. Shashi Sekhar Vempati
17
Who is the winner of US open badminton Championship Men’s Single held at California in 24th July 2017 ?
Answer
A. H.S. Pranoy
18
Who is the director of controversial Bollywood film ‘Indu Sarkar’ ?
Answer
B. Madhur Bhandarkar
19
Who is the present Chairman of NITI Aayog ?
Answer
D. Sri. Narendra Modi
20
‘Freedom From Waste’ campaign launched by
Answer
Question Cancelled
21
In a refrigeration cycle, pressure is maximum __________
Answer
D. After Compressor
22
The Dalton’s law deals with the __________
Answer
C. Sum partial pressure of gases
23
An automatic expansion valve is based on the principle of __________
Answer
B. Maintaining a constant pressure in evaporator
24
Window AC for cooling mode can be easily converted to heating mode by installing a
Answer
B. RCV
25
Approach of a cooling tower is defined as the
Answer
C. Difference of temperature of water leaving the CT and WBT of surrounding air
26
Temporary hardness of water can be removed by
Answer
C. boiling
27
The cleaning efficiency of a fine filter is
Answer
A. 99.9%
28
Which type of fan is used in electrical motors for internal cooling ?
Answer
D. Radial blade fan
29
Which senses the suction temperature in thermal electric expansion valve ?
Answer
D. Thermistor
30
Which run capacitor is used with 1.5 TR AC ?
Answer
C. 36 mfd, 440/370 V
31
The difference between the synchronous speed and the actual rotor speed is called
Answer
B. Slip speed
32
The difference between the dry bulb temperature and wet bulb temperature is called
Answer
B. Wet bulb depression
33
A low side float valve maintains the level of refrigerant in
Answer
D. Flooded evaporator
34
Boiling point of R 600a is
Answer
B. −128C
35
RF remote control with a range of roughly
Answer
A. 100 feet
36
Bush bearings are usually made of
Answer
B. Bronze
37
The sediments which form as a coating on cooling coil will reduce the __________
Answer
B. Heat transfer efficiency
38
The extinguisher used for electric fire is
Answer
Question Cancelled
39
Cutting of sheet metal by two parallel cutting edge moving in opposite direction is termed as
Answer
C. Shearing
40
Water is used as a refrigerant
Answer
Question Cancelled
41
The upcoming alternative refrigerant to be used in car air conditioning system is __________
Answer
C. R 1234yf
42
Comfort cooling ducts are commonly fabricated out of
Answer
Question Cancelled
43
In saturated air
Answer
D. All of these
44
VRF stands for
Answer
B. Variable Refrigerant Flow
45
The gap between the false ceiling and the main ceiling is referred as
Answer
B. Plenum
46
During installation of split AC unit, what is the maximum vertical distance between indoor and outdoor units ?
Answer
A. 20 feet
47
Water pressure cut out switch is installed in
Answer
D. Both
48
For leak testing, maximum test pressure for split AC system is
Answer
B. 150 PSIG
49
Cylindrical and needle roller bearings are commonly found in
Answer
C. Gear boxes
50
Following are the methods of food preservation
Answer
D. Both
51
A motor has 4 poles, its RPM is
Answer
A. 1500
52
Cooling performance test can only affectively done at ambient temperature above
Answer
D. 758F 8 A
53
If we use solar panels to run a car AC then the mileage of car will
Answer
A. Increase
54
The main working substance in air conditioning is __________
Answer
B. Moist air
55
The temperature at which moisture condenses on a surface is called __________
Answer
D. Dew point temperature
56
Scaling
Answer
C. Deposition of a layer of chemicals inside a water carrying pipe in a heat exchanger
57
What is DDC in HVAC system ?
Answer
D. Direct Digital Control
58
Which valve allow fluid flow in only one direction ?
Answer
C. Check valve
59
Cylinder colour code for R 22 is
Answer
A. Light green
60
In a scroll compressor
Answer
C. The discharge port is in the center and suction port is on the outer periphery
61
Piercing valves are used to tap a line for
Answer
D. All of these
62
Window and split air conditioning units are used __________ compressor motors
Answer
A. CSR
63
Air flow quantities are measured in
Answer
D. CFM
64
Screwdrivers are classified according to
Answer
D. All of these
65
Compressor crank shaft seal prevents __________ from escaping out
Answer
B. Oil and Refrigerant
66
In a refrigeration cycle the heat is rejected by refrigerant at
Answer
D. Condenser
67
For brazing most commonly used flux is
Answer
A. Borax
68
Single phase motor is __________
Answer
C. Not self starting
69
Liquid receiver in a vapour compression system is used in __________
Answer
C. Liquid line
70
HEPA stands for
Answer
B. High Efficiency Particulate Air
71
ADP represents
Answer
A. Coil temperature
72
GWP of R 134a refrigerant
Answer
B. 1300
73
Atmospheric pressure at sea level is
Answer
D. All of these
74
Following is an HC refrigerant
Answer
A. R 600a
75
Capillary tube is used for __________
Answer
A. Low capacity system
76
What is the reason for poor condensation in Split AC ?
Answer
Question Cancelled
77
Which instrument is used for measuring humidity ?
Answer
C. Hygrometer
78
ODP Value of HFC 134a
Answer
C. 0
79
De-superheating takes place in __________
Answer
D. Both
80
The ratio of the sensible heat to the total heat is known as
Answer
A. Sensible heat factor
81
The compressor motor in a hermetically sealed compressor is cooled by
Answer
C. Refrigerant
82
Float valves are used in
Answer
B. Large refrigeration systems
83
Velocity pressure is
Answer
B. Difference between Total pressure and Static pressure
84
The unit of Resistance is __________
Answer
A. Ohm
85
The heart of the refrigeration system is __________
Answer
D. Compressor
86
Which line in Psychrometric chart as obliquely inclined straight lines and uniformly spaced ?
Answer
D. Specific volume
87
In star delta starter the main contactor is named as
Answer
C. KM 3
88
What is the purpose of adding dye in compressor lubricating oil to the Car AC system ?
Answer
A. Identify the gas leak
89
The relationship between rotor speed ‘N’, frequency ‘f’ and no. of poles ‘P’ given by the relation
Answer
A. N=120f/P
90
The coil has to be rinsed after de-scaling till the pH level comes to
Answer
C. 7 to 7.5
91
The voltmeter can be used in __________
Answer
B. Parallel connection
92
During sensible heating of moist air, specific humidity
Answer
C. Remains constant
93
The fresh air or ventilation air is a must in any comfort air conditioning system. Its purposes are __________
Answer
D. All of these
94
Refrigerant propane has the designation __________
Answer
C. R 290
95
The expansion device used in central AC plant is
Answer
B. TXV
96
The chemical name of refrigerant R 134a is __________
Answer
C. Tetrafluoroethane
97
Bourden tube is a __________
Answer
A. Pressure measuring device
98
Three TR is equivalent to __________ of cooling effect
Answer
B. 10.5 kW
99
Dry Bulb Temperature (DBT) is the actual temperature of __________
Answer
D. Moist air
100
Tools used for making external threads is
Answer
B. Die
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