As planets move toward the sun, they tend to: a. move at constant speed b. speed up c. burn up d. slow down

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

What is special about a dc circuit ?

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.