Quiz Questions

TRADE THEORY - 17-Feb-2026 03:29 PM (ITISKILL2897IV)

Q-Paper A-Paper
Question 1 1 Marks
Which component defrosts in frost free refrigerator?
A
Bulb
B
Heater
C
Thermostat
D
Capillary tube
Question 2 1 Marks
Which component switches ON/OFF the starting winding in RSIR motor?
A
Thermostat
B
Capacitor
C
Relay
D
OLP
Question 3 1 Marks
What is the cut out temperature of bimetal thermo in frost free refrigerator?
A
5 Degree Centigrade
B
10 Degree Centigrade
C
20 Degree Centigrade
D
25 Degree Centigrade
Question 4 1 Marks
Which domestic system uses automatic defrost?
A
Frost free refrigerator
B
Conventional refrigerator
C
Split air - conditioner
D
Window air - conditioner
Question 5 1 Marks
Which is used to clean the condenser fins of a refrigerator?
A
Painting brush
B
Diluted acid
C
Soap solution
D
Fin comb
Question 6 1 Marks
How the capacity of refrigerator is expressed?
A
Weightage
B
Tonnage
C
Wattage
D
Litres
Question 7 1 Marks
What is the temperature maintained in the refrigerator freezer?
A
0 Degree Centigrade
B
- 15 Degree Centigrade
C
- 45 Degree Centigrade
D
- 65 Degree Centigrade
Question 8 1 Marks
Where the manually defrosted water is stored in refrigerator?
A
Tray on top of the compressor
B
Bottom of the evaporator
C
Bottom of the condenser
D
Top of the freezer
Question 9 1 Marks
Which component is used in frost free refrigerator?
A
Plate coil evaporator
B
Liquid receiver
C
Oil separator
D
Timer switch
Question 10 1 Marks
Which type of evaporator is used in frost free refrigerator?
A
Plate type
B
Wire mesh
C
Finned tube
D
Shell and tube
Question 11 1 Marks
Which device protects the compressor motor from drawing more current?
A
OLP
B
Relay
C
Thermostat
D
Door switch
Question 12 1 Marks
Which device equalizes the system pressure in frost free refrigerator?
A
Capillary tube
B
Compressor
C
Condenser
D
Evaporator
Question 13 1 Marks
Which method of refrigeration system is adopted in frost free refrigerator?
A
Vapour compression
B
Vapour absorption
C
Water vapour
D
Evacuating
Question 14 1 Marks
Which electrical control cuts off heating element in frost free refrigerator?
A
Bimetal thermo
B
Thermostat
C
Relay
D
Timer
Question 15 1 Marks
What is the working condition of component during defrost cycle in frost free refrigerator?
A
Evaporator fan motor is running
B
Compressor is not running
C
Thermostat cuts off
D
Relay activated
Question 16 1 Marks
Which component actuates the defrost cycle in frost free refrigerator?
A
Bimetal thermo
B
Defrost heater
C
Timer
D
Relay
Question 17 1 Marks
Which component is turned off while defrost heater is energised?
A
Cabinet bulb
B
Evaporator fan
C
Thermostat sensor
D
Over load protector
Question 18 1 Marks
Which movement of plunger energises the start winding in relay operation?
A
Vertically up
B
Bottom side
C
Vertically down
D
Horizontally left
Question 19 1 Marks
Which is connected in series with start capacior in motor circuit?
A
Starting winding
B
Common terminal
C
Running Terminal
D
Running winding
Question 20 1 Marks
Why frost free model refrigerator takes less freezing time of products?
A
Forced air circulation
B
Natural air circulation
C
Low temperature setting
D
High temperature setting
Question 21 1 Marks
What is the reason if refrigerator runs normally but no cooling effect?
A
Leakage of refrigerant
B
Condenser block
C
Filter block
D
Over charge
Question 22 1 Marks
What is the effect of bimetal thermo stucks in ON position in frost free refrigerator?
A
Accumulation of frost
B
More cooling
C
Poor cooling
D
No cooling
Question 23 1 Marks
What is the effect of contamination in refrigeration system?
A
High heating
B
Poor cooling
C
Low pressure
D
Low humidity
Question 24 1 Marks
What is the cause for refrigerator door gap at closing position?
A
Uneven floor level
B
Either side gap more
C
Either side gap less
D
Uneven condenser level
Question 25 1 Marks
Which component is replaced to prevent air entering the refrigerator cabinet?
A
Thermostat
B
Door gasket
C
Door paint
D
Door hinges