PHYSICS- PAGE 12
1:-Which colour wire is recommended for earthing as per IS code ?
A:-Red
B:-Blue
C:-Black
D:-Green
Ans: D
2:-A Watt meter is used to measure
A:-Only A.C. current
B:-Only D.C. current
C:-A.C. or D.C. power
D:-A.C. voltage
Ans: C
3:-Suitable motor for the compressor of a split Air Conditioner is
A:-RSIR
B:-CSIR
C:-PSC or CSR
D:-None of these
Ans: C
4:-The relay used in H.C. Refrigerant is
A:-LMS type
B:-Voltage type
C:-PTC type
D:-Current type
Ans: D
5:-What is the reason for overheating of the compressor of a Refrigerator ?
A:-High working voltage B:-Poor condensation
C:-Excess refrigerant in the system D:-All of these
Ans: D
6:-The Latent Heat Value of `NH_(3)` Refrigerant is
A:-650 BTU/lb
B:-560 BTU/lb
C:-565 BTU/lb
D:-465 BTU/lb
Ans: C
7:-De-foresting timer is used for in frost free refrigerator.
A:-Disconnecting the heater
B:-Connecting the heater
C:-Connecting and disconnecting the compressor
D:-Operating compressor and heater
Ans: D
8:-The eco-friendly refrigerant is
A:-Freon-12
B:-Freon-22
C:-Hydro carbon
D:-None of these
Ans: C
9:-Drier Strainer is used in Refrigeration System for
A:-Removing dust from air flow
B:-Removing moisture and air from refrigerant
C:-Removing non-condensable gas from air
D:-Removing dust particles and moisture from refrigerant
Ans: D
10:-Before compression, the condition of the Refrigerant is
A:-Low Pressure and Temperature Liquid
B:-High Pressure and Temperature Vapour
C:-Low Pressure and Low Temperature Gas
D:-High Pressure and Temperature Gas
Ans: C
11:-Use of Heat exchanger is
A:-Super heats the liquid line
B:-Sub-cool the section line
C:-Heat exchanges suction line to discharge line
D:-Heat exchanges liquid line to suction line
Ans: D
12:-Suction pressure of ice plant with `NH_(3)` Refrigerant is
A:-65 to 75 psig
B:-80 to 90 psig
C:-Below 30 psig
D:-Above 100 psig
Ans: C
A:-Red
B:-Blue
C:-Black
D:-Green
Ans: D
2:-A Watt meter is used to measure
A:-Only A.C. current
B:-Only D.C. current
C:-A.C. or D.C. power
D:-A.C. voltage
Ans: C
3:-Suitable motor for the compressor of a split Air Conditioner is
A:-RSIR
B:-CSIR
C:-PSC or CSR
D:-None of these
Ans: C
4:-The relay used in H.C. Refrigerant is
A:-LMS type
B:-Voltage type
C:-PTC type
D:-Current type
Ans: D
5:-What is the reason for overheating of the compressor of a Refrigerator ?
A:-High working voltage B:-Poor condensation
C:-Excess refrigerant in the system D:-All of these
Ans: D
6:-The Latent Heat Value of `NH_(3)` Refrigerant is
A:-650 BTU/lb
B:-560 BTU/lb
C:-565 BTU/lb
D:-465 BTU/lb
Ans: C
7:-De-foresting timer is used for in frost free refrigerator.
A:-Disconnecting the heater
B:-Connecting the heater
C:-Connecting and disconnecting the compressor
D:-Operating compressor and heater
Ans: D
8:-The eco-friendly refrigerant is
A:-Freon-12
B:-Freon-22
C:-Hydro carbon
D:-None of these
Ans: C
9:-Drier Strainer is used in Refrigeration System for
A:-Removing dust from air flow
B:-Removing moisture and air from refrigerant
C:-Removing non-condensable gas from air
D:-Removing dust particles and moisture from refrigerant
Ans: D
10:-Before compression, the condition of the Refrigerant is
A:-Low Pressure and Temperature Liquid
B:-High Pressure and Temperature Vapour
C:-Low Pressure and Low Temperature Gas
D:-High Pressure and Temperature Gas
Ans: C
11:-Use of Heat exchanger is
A:-Super heats the liquid line
B:-Sub-cool the section line
C:-Heat exchanges suction line to discharge line
D:-Heat exchanges liquid line to suction line
Ans: D
12:-Suction pressure of ice plant with `NH_(3)` Refrigerant is
A:-65 to 75 psig
B:-80 to 90 psig
C:-Below 30 psig
D:-Above 100 psig
Ans: C