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1692016 Related Question Answers
51. Convert from CFC 12 to HFC134, appliance, the compressor displacement will be :
Slightly larger Smaller Equal Double
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54. In window type air-conditioners the following expansion device used :
Float valve Thermostatic expansion valve Capillary tube Hand valve
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60. The mechanical fault in refrigerator system is :
High voltage Condenser coil dirty Over load protector burnt Relay defective
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62. Internal energy of a substance is proportional to ;
Velocity Temperature Pressure None of the above
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63. The closing of chumer and top cover done air tight by:
‘O’ ring Seal Gasket Sticking tape
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65. Select the ‘pitch' of a medium hacksaw blade from the following:
1.8 mm 1.0 mm and 4 mm 1.4 mm and 1.0 mm 0.8 mm
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66. Compressor used in window A/c is :
Rotary compressor Reciprocating compressor Sealed compressor Open type compressor
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67. The most possible leakage spots in the refrigerator is :
Capillary tube Drazing tube joints Condenser Evaporator
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72. Name the temperature at which moisture condenses on a surface :
Relative humidity Grains of moisture Dew point temperature Humidity
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73. Name the correct tool which is used to cut wires :
Wire cutter Tube cutter Shear Combination plier
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75. The amount of heat required in calories to raise the temperature of one gram of substance through 1°C is:
Sensible heat Specific heat Latent heat B.t.u
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