73) Which of the following conditions clearly indicates the difference between a refrigerator and a heat pump ?

COP of refrigerator > 1 and COP of heat pump < 1

COP of refrigerator < 1 and COP of heat pump > 1

COP of refrigerator greater than equal to 1 and COP of heat pump lesser than or equal to 1

COP of refrigerator < or > 1 and COP of heat pump > 1

Answer is:

COP of refrigerator < or > 1 and COP of heat pump > 1

Increase bearing resistance

Increase compressive strength

Provide any friction properties

Increase wear resistance

Answer is:

"1/3" rd of reciprocating masses are balanced by rotating masses.

"1/2" nd of reciprocating masses are balanced by rotating masses.

None of the above

Answer is:

(N)/(N2-N1)

(N1-N2)/(N)

(N)/(N1-N2)

(N2-N1)/N

Answer is:

Francis turbine

Kaplan turbine

Pelton wheel

Any of the above

Answer is: