| Post Name | REFRIGERATION MECHANIC - UIP |
|---|---|
| Department | HEALTH SERVICES |
| Question Paper Code | 066/2016 |
| Date of Test | 11 May 2016 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Sensible heat factor is :
Answer
D. Sensible heat/Total heat
2
Amount of heat required to raise the temperature of one pound of water through 1°C is called :
Answer
A. C.H.U.
3
Oil separator is filled in between :
Answer
C. Compressor and condenser
4
H.F.C. should not vent into atmosphere because :
Answer
B. It has high global warming potential
5
Process of changing solid into its vapour state without passing through liquid state is :
Answer
B. sublimation
6
Latent heat of fusion of ice is :
Answer
D. all of the above
[P.T.0.]
7
Sling psychrometer is used to measure :
Answer
C. dry and wet bulb temperature
8
In air refrigeration refrigerating effect is produced by :
Answer
B. expanding air
9
Accumulator is provided for :
Answer
A. storing of unvapourized liquid
10
In air conditioning of aeroplanes the refrigerant used is :
Answer
C. Air
11
Select the wrong characteristics of refrigerant :
Answer
A. low latent heat
12
The function of duct in air conditioning unit is :
Answer
D. air distributing
13
Commonly used refrigerant in commercial ice plant is :
|
Answer
A. Ammonia
14
The C.O.P. of a domestic refrigerator in comparison to domestic air conditioner will be :
Answer
C. less
15
An Air washer can work as:
Answer
D. All the above
066/2016 4 A
16
The brine is always used as a secondary refrigerant in :
Answer
C. ice plant
17
In winter air conditioning the process used is :
Answer
B. Heating and humidification
18
At which point °C scale and °F scale will be same :
Answer
A. −40°
19
Sub cooling is a process of cooling the refrigerant in vapour compression refrigeration system
before :
Answer
B. Throttling
20
The milk is stored at a temperature of :
Answer
D. 4
21
Absolute zero temperature is taken as :
Answer
A. -273°C
22
A thermostatic expansion valve function with :
Answer
D. suction temperature
23
For ammonia refrigerating system the tubes of a shell and tube condenser are made of :
Answer
C. Steel
24
Convert from CFC 12 to HFC 134 A the compressor displacement will be :
Answer
C. slightly larger
25
The type of condenser used in water cooler :
Answer
B. forced draft
26
Pump down the system for :
Answer
D. to attend maintenance in low side
27
Purging is done:
Answer
B. before gas charging
28
The refrigerant enters in the condenser by the : a
Answer
A. top side
29
One ton refrigeration is equal to:
Answer
D. all of the above
30
Liquid charged in thermostatic expansion valves sensing bulb is :
Answer
B. same refrigerant
31
Solenoid valve operated by : é
Answer
A. electrically
32
The colour of the flame of halide torch in case of leakage of Freon refrigerant will change to :
Answer
C. bright green
33
Which type of valve is used in a reciprocating refrigeration compressor?
Answer
C. ring plate
34
The presence of frost on the cooling coils of the evaporator of a refrigeration system :
Answer
B. act as the insulator and decreases the heat transfer rate
35
Dry ice is:
Answer
A. solidified carbondioxide
36
Which of the following machines can be used to obtain refrigeration at places where there is
no electric power?
Answer
D. vapour absorption |
37
Rectifiers are used for converting :
Answer
B. ACtoDC
38
The operation theatre in a Hospital is to be air conditioned suggest the percentage of outside air being circulated in the theatre :
Answer
D. 100
39
The difference between D.B.T. and W.B.T. is called : ;
Answer
A. wet bulb depression
40
The absolute zero temperature corresponds on the condition when :
Answer
Question Cancelled
41
The oil used with 134 A refrigerant is :
Answer
C. Polyol ester oil
42
Cripser temperature of refrigerator is equal to :
Answer
B. 8°C
43
Auto defrost operated by :
Answer
C. Timer switch
44
Dehydrator is installed in the :
|
Answer
A. liquid line
45
The device which used to find relative humidity :
Answer
D. Hygrometer
46
Chemical name of Freon 22 is :
Answer
B. Monochloro difluoro methane
47
The capacity of visible cooler is expressed in :
Answer
B. litres
48
Which of the following refrigerant has the lowest boiling point?
Answer
A. Carbon dioxide
49
HFC 134 A appliance has capillary length when compare to CFC unit :
Answer
A. 10% to 20% more
50
The effectiveness of the cooling tower is dependent on :
Answer
C. ‘Wet bulb temperature of the air
51
Milky white ice obtained if : |
Answer
D. air is present in it |
52
Ina shell and coil condenser : |
Answer
D. _ water flows in the coil and the refrigerant in the shell
53
Ina thermal electric expansion valve which senses the suction temperature is :
Answer
B. Thermister
54
Ina flooded evaporator which of the following types of expansion, device is employed : |
Answer
A. float valve
55
In an ice plant the function of brine agitator is :
Answer
C. to obtain uniform temperature
56
In an air conditioning system the comfort conditions are defined by :
Answer
D. 22°C DBT 60% RH
A 9 066/2016
[P.T.O.]
57
The electrical component of automobile air conditioner allows to engage and disengage the
compressor from the thermostat :
Answer
D. Magnetic clutch
58
Sum of atmospheric pressure and gauge pressure is called :
Answer
B. Absolute pressure
59
The diode used for voltage regulation is :
|
Answer
C. Zener diode
60
The specific humidity is the mass of water vapour present in :
Answer
A. 1kg of dry air
61
Which one of the following oxy fuel gas flames has the highest flame temperature?
Answer
B. Oxy acetylene flame
62
A micrometer has a positive error of 0.02 MM. What is the correct reading when the
| micrometer measures 25.37 MM :
|
Answer
A. 25.36 MM
63
One micron of vacuum is equal to: :
|
Answer
C. 0.001MMHg .
64
Start the compressor without relay to short : ‘
Answer
B. Sand R terminal
65
There is no relay and starting capacitor in :
Answer
D. PSC circuit
066/2016 10 A
66
Stabilizer used for 1.0 TR AC is:
Answer
B. 3KVA
67
Select the period of interval for a defrost cycle in a frost free refrigerator : :
Answer
A. once in 12 hours
68
Select the boiling point of refrigerant 134 A at 1 atmosphere :
Answer
C. -26.1°C
69
Most important property of insulating material is :
Answer
D. low conductivity
70
The component which control the bimetal thermostat is :
Answer
A. Defrost heater
71
HC refrigerant using systems should be vacuumized upto :
Answer
C. 100 Microns Hg
72
When compare to CFC 12 the charge of 134 A will be :
Answer
A. 90% to 95%
73
The swash plate compressor is most frequently used in : :
Answer
D. Car air conditioners
74
Which of the following refrigerant has the lowest freezing point?
Answer
C. Freon-22
75
Amechanical shaft seal is necessary in
Answer
A. open type compressor
76
While recovery the cylinder can be charged maximum upto :
Answer
B. 80%
i
77
The component common for vapour compression and vapour absorption system is :
Answer
B. _ Condenser
78
Modification of R.12 to R 134 A refrigerant is called :
Answer
C. retrofit
79
The fire micron filter is named as :
Answer
Question Cancelled
80
Water inlet flow of the water cooler is controlled by :
Answer
D. float valve
81
The Environment Protection act of India came into force on :
Answer
A. 19 November 1986
82
Who is the author of the work “Brahmotharakandom”?
Answer
C. Ayyavu Swamikal
83
Which was known as the “Magna Carta of the Travancore Ryota”? :
Answer
D. Pandara Pattam Proclamation
066/2016 12 A
84
“Swaraj Bhavan” is the office complex situated in Thiruvanathapuram, Which one is not
situated in this complex?
Answer
D. None of these
85
In which year Benjamin Bailey published first English Malayalam Dictionary?
Answer
B. 1846
86
During the Civil Disobedient Movement in Kerala British arrested the leaders except : |
Answer
C. Sarojini Naidu
87
The place where the Fifth Malabar District Political Conference held on 28% April 1926 in the |
presence of Annie Besent adopted a resolution rejecting Motague Chelmsford reforms : |
Answer
B. Manjeri
88
The First Malayalam Newspaper Rajyasamacharam was published in 1847 from :
Answer
A. Ilikkunnu
89
Purogamana kalasahithya Sangam was formed on 14% August 1981 under the leadership
of :
Answer
D. Vylopilli Sreedharamenon
90
The Freedom Fighter popularly known as “Jhansi Rani of Travancore” :
Answer
A. Accama Cheriyan
91
The Social Reformer started an education Journal “Vidyalayam” in 1919:
Answer
C. Moorkkothu Kumaran
92
The place where Ayyathan Gopalan founded Chandavarkar Elementary School to encouraging education among Dalits :
Answer
B. Kozhikkode
93
The author of the fantacy novel “Blue jasmine” :
Answer
C. R. Leeladevi
94
Which Constitution Amendments provides for the formation of National Judicial
Appointment Commission in 2013?
|
Answer
Question Cancelled
95
First women Chief Election Commissioner of India :
Answer
D. VS Ramadevi
96
NDA government recently launched a new Pension Scheme in India is :
Answer
A. Atal Bima Yojana
97
Rajiv Gandhi Khel Ratna Award 2015 given to:
Answer
A. Sania Mirza
98
Who is the Present Loksabha Deputy Speaker of India?
Answer
C. M Thambidurai
99
Which one is not related with RAW ? ,
Answer
D. None of These
100
In the Census 2011 Which state is the highest Density of Population of India?
Answer
Question Cancelled
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