| Post Name | VOCATIONAL INSTRUCTOR IN REFRIGERATION AND AIR CONDITIONING |
|---|---|
| Department | KVHSE |
| Question Paper Code | 090/2016 |
| Date of Test | 21 July 2016 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
A fan may be considered as a pump, because it : .
Answer
A. looks like most other kindof pumps
2
If Nis the fan epeed, then power of a fan is directly proportional to:
Answer
C. c) N?
3
For rectangular ducts, the aspect ratio is equal to:
Answer
D. ratio of longer and shorter sides
4
The alignment circle is marked on the psychrometric chart at :
Answer
B. 26°C DBT and 50% RH
5
When the temperature of the surroundings is higher than the temperature of the body, then |
the heat loss by convection from the body to the surroundings will be :
Answer
B. negative
6
In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a
temperature: —
Answer
C. which is lower than the dew point temperature of the incoming stream
7
The velocity of stream at the exit of the nozzle is :
Answer
Question Cancelled
8
The pressure in a capillary tube decreases due to:
Answer
D. both
9
‘The freon group of refrigerants are :
Answer
A. halo-carbon refrigerants
10
In electrolux refrigerator : |
Answer
Question Cancelled
11
A boot-strap air cooling system has :
Answer
B. two heat exchangers
12
The subcooling is a process of cooling the refrigerant in vapour compression refrigeration
system:
Answer
C. before throttling
13
Which of the following constituents of steel is softest and least strong?
Answer
C. ferrite
14
Which hardness method can be used to measure hardness of a single grain?
Answer
B. Knoop
15
The higher temperature of tempering:
Answer
A. the softer will be the product
16
A key technique in the development of creative alternatives is the use of :
Answer
A. brain storming
17
Reliability can be considered as :
Answer
B. the probability of aurvival of a component
|
18
Group technology brings together and organises :
|
Answer
C. common parts, problems and tasks
19
Most of the large scale modern industry using automation adopt : |
Answer
B. product layout |
20
If the demand for an item is doubled and the ordering cost halved, the economic order
quantity :
Answer
A. remains unchanged
21
Unity of command is violated under ——————— organization.
Answer
C. functional
22
A device used for lifting or lowering objects suspended from a hook at the end of retractable
chains or cables is called :
Answer
A. hoist
23
Bin cards are used in keeping record of :
Answer
C. material storage
24
Simple harmonic motion
Answer
D. is a projection of the circular motion of a particle at constant speed on a diameter
of the circle
a 5 090/2016
[P.T.O,]
25
Routing decides
Answer
B. sequence of operations to be followed
26
‘The moment of inertia of an area is always least with respect to:
Answer
A. centroidal axis
27
All of the following statements are correct, except :
Answer
B. An activity of the project is represented by a circle
28
The standard length in a sine bar is measured :
|
Answer
A. between the centres of two rollers
29
One atmospheric pressure is not equivalent to:
Answer
B. 10⁴ N/m²
30
31
Which one of the following is not a part of micrometer?
Answer
C. beam
32
Which of the following statements is not true?
Answer
C. The horse power per ton of refrigeration equals 4.75 times the coefficient of
performance
33
Solar energy can be directly used in
|
Answer
D. vapour absorption refrigeration system |
34
Choose the false statement |
Answer
D. thermal conductivity decreases with increase in the density of the substance
35
Fins are usually provided to a heat exchanger surface in order to augment heat tranafer by
increasing the
Answer
B. surface area
36
Transient conduction means
Answer
D. conduction when the temperature at a point varies with time
37
Isothermal efficiency of a compressor is defined as the ratio of
Answer
D. isothermal work to the actual work required to compress the air for the same
pressure ratio
A 7 090/2016
[P.T.0.]
38
Suggest the device commonly preferred for supercharging I.C. engines
Answer
B. roots blowers
39
Critical pressure for steam is
Answer
C. 225.65 kefiem?
40
Vapour is a
Answer
C. mixed phase of liquid and gas
41
Which of the following statements is not true with respect to Mollier-diagram?
Answer
B. The constant pressure lines bend slightly downward in the super heated region
42
During ——————— a solid changes directly to the gaseous form without ever being a liquid.
Answer
C. sublimation
43
Highest useful compression ratio is the compression ratio at which the engine
Answer
B. can operate without detonation
44
Scavenging air means
Answer
B. air used for forcing the burnt gases out of the cylinder during the exhaust period
45
Which pair of gears usually has hich friction losses?
|
Answer
D. Worm and worm wheels
46
Which is not the effect of detonation?
|
Answer
B. loss in efficiency and power output
47
Athermodynamic system refers to;
Answer
D. a prescribed and identifiable quantity of matter
48
Identify the wrong statement :
Answer
B. the quantity of matter constituting a system remains constant
49
Poise is the unit of :
Answer
D. dynamic viscosity
50
Capillary action is due to :
Answer
C. cohesion and adhesion
51
Bernoulli's equation is applicable between any two points in:
Answer
D. steady, irrotational flow of an incompressible fluid
A 9 090/2016
[P.T.O,]
52
A Pelton wheel is ideally suited for :
Answer
A. high head and low discharge
53
With compression of closed coiled helical spring, the wire gets subjected to : |
Answer
A. tension
54
Size of the gear is generally specified by ;
Answer
A. pitch cirele diameter
55
Which is closest to the purest form of iron?
Answer
B. wrought iron
|
56
A univereal joint is an example of :
Answer
A. lower pair
57
Bulk modulus is measured in terms of :
Answer
B. Nim?
58
Percentage elongation during tensile test is indicative of :
Answer
C. ductility
59
The charpy test is conducted to measure :
Answer
A. toughness
60
Atwist drillisa:
Answer
C. end cutting tool
61
Large and heavy castings are made by :
Answer
A. green sand moulding
62
Which of the following is not a casting defect? |
Answer
D. Decarburization
63
Grey cast iron is best welded by:
|
Answer
C. Oxy-acetylene welding
64
Value of coefficient of friction in hot forming is :
Answer
C. 0.6
65
Slag inclusion in casting is
Answer
A. surface defects
66
Wax pattern is used in:
Answer
C. investment casting
67
In drawing operation, the metal flows due to:
Answer
C. plasticity
68
In compound dies:
Answer
A. two or more cutting operations can be performed simultaneously
69
The usual ratio of forward and return stroke in shaper is:
Answer
D. 3:2
70
Chip breakers are provided on cutting tools :
Answer
Question Cancelled
71
The power factor of a purely inductive circuit is :
Answer
C. zero
72
When the supply voltage for an induction motor is reduced, which of the following will
increase?
Answer
A. full load current
73
Transformer ratings are usually expressed in terms of :
|
Answer
B. kVA
74
The rotor of the alternator has :
|
Answer
A. two slip ringa
75
Asingle phase capacitor start motor will take starting current nearly :
Answer
A. twice the full load current
76
Dielectric is must in:
Answer
A. EDM process
77
Which of the following doping will produce p-type semiconductors :
Answer
Question Cancelled
78
Athermionic cathode is heated to:
Answer
B. emit electrons
79
80
An oscillator circuit is mainly :
Answer
C. DC to AC converter
81
Nana Sahib led the I* War of Indian Independence (1857) from :
Answer
D. Kanpur
090/2016 12 A
82
Amriia Bazor Patrika that played an important role in the national freedom struggle
movement was published in :
Answer
C. Enghsh
83
What is the proportion of Hindus and Muslims in the Indian population as per the Socio
Economic and Caste Census findings released in 2015?
Answer
A. 80:14
84
Who was the Prime Minister of England When India attained independence in 1947?
Answer
C. c) Clement Attlee
85
Garibi Hatao was a slogan of:
Answer
B. Indira Gandhi
86
One of the following is not Nobel laureate. Identify the person :
Answer
C. Jayaprakash Narayan
87
Name the Kerala based bank that completed 70 years of operation in 2015?
Answer
D. State Bank of Travancore
88
Name the Leader of the Opposition in the'Lok Sabha :
Answer
Question Cancelled
89
Which of the following city will host 2020 Olympic Games?
Answer
B. Tokyo
90
Santhara is a religious practice among the :
Answer
D. Jains
91
Who was the first president of Sree Dharma Paripalana Yogam founded in 1903?
Answer
D. Narayana Guru
A 13 090/2016
[P.T.0.]
92
Sedhu Jana Paripalana Sangham was founded by : |
Answer
A. Ayyankali
93
Who among the following tried to organize Dalit Christian communities? |
Answer
A. Kumara Guru
94
Who was the founder and publisher of Swadeshabhimani?
Answer
B. WVakkam Abdul Khader Moulavi
95
Aanneerum Ainavum is a book authored by :
Answer
Question Cancelled
96
The Last Mughal is a book written by :
Answer
B. William Dalrymple
97
NITI Aayog replaced :
Answer
A. Planning Commission
98
Telengana became ———————_ State of India.
|
Answer
C. c) 29
99
Irom Sharmila who has been fasting since 2000 demanding the withdrawal of the Armed
| Forces (Special Powers) Act hails from :
Answer
A. Manipur
100
Name the eocial activist and former Vice Chancellor of Kannada University who was shot.
dead in 2015 in Karnataka for promoting rational thinking :
Answer
D. M.M. Kulbarghi
0090/2016 14 A
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