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AAI Technical Rapid Quiz-58
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Question 1
The heat removal rate from a refrigerated space is 7.2 kW and the power input to the compressor is 1.8 kW. The coefficient of performance (COP) of the refrigerator is
Question 2
The shafts of the same length and material are connected in series, if the ratio of their diameters is 2, then the ratio of their angles of twist will be
Question 3
The pressure P of a gas in terms of its mean kinetic energy per unit volume E is equal to
Question 4
A turbine develops 500 kW power under a head of 100 m at 200 rpm. What would be its normal speed under a head of 81 m?
Question 5
The optimum cutting speed for maximum production is (‘n’ is tool constant and ‘Tc’ is time required to change the tool) ___________.
Question 6
Which one of the following steels contains least percentage of carbon ?
Question 7
In a grinding wheel specification of ‘Wa 36 k 8 v Be’, “Wa” indicates
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