A. Zeroth
B. First
C. Second
D. Third
Related Mcqs:
- A refrigerator works on the principle of _____________ law of thermodynamics?
A. Zeroth
B. First
C. Second
D. Third - 1st law of thermodynamics is nothing but the law of conservation of___________________?
A. Momentum
B. Mass
C. Energy
D. None of these - The first law of thermodynamics is a restatement of the law of conservation of_________________?
A. Mass
B. Energy
C. Momentum
D. None of these - Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is_____________________?
A. Positive
B. Negative
C. Zero
D. Infinity - A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?
A. Vapor compression cycle using expansion valve
B. Air refrigeration cycle
C. Vapor compression cycle using expansion engine
D. Carnot refrigeration cycle - What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR (where, T1 and T2 are source & surrounding temperatures respectively.) ?
A. TR/(T2 – TR) × (T1 – T2)/T1
B. TR/(T2 – TR) × T1/(T1 – T2)
C. TR/(T1 – TR) × (T1 – T2)/T1
D. None of these - Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system ?
A. Expansion valve
B. Condenser
C. Refrigerator
D. Compressor - Which law of the thermodynamics provides basis for measuring the thermodynamic property ?
A. First law
B. Zeroth law
C. Third law
D. Second law - Second law of thermodynamics is concerned with the_________________?
A. Amount of energy transferred
B. Direction of energy transfer
C. Irreversible processes only
D. Non-cyclic processes only - Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass ?
A. dE = Tds – PdV
B. dQ = CvdT + PdV
C. dQ = CpdT + Vdp
D. Tds = dE – PdV
