1) In an isothermal process a. Pressure remains constant b. No heat exchange occ

Question

1) In an isothermal process

a. Pressure remains constant

b. No heat exchange occurs

c. Volume remains constant

d. Temperature remains constant

2) The first law of thermodynamics is a restatement of

a. carnot cycle

b. the principle of entropy

c. conservation of energy

d. law of heat addition      

3) Choose the best option for maximizing the efficiency of a heat engine
a. TH = 0 K
b. TC = 0 K
c. TH = 100 TC
d. TC= 100 TH

4) It is possible to wholly convert a given amount of heat energy into mechanical energy
a. True
b. False

5) The entropy of the universe can be
a. neither increased nor decreased

b. decreased but not increased

c. both increased and decreased

d. increased but not decreased

6) In an adiabatic process

a. Temperature remains constant

b. Pressure remains constant

c. Volume remains constant

d. No heat exchange occurs

7) For a heat engine, the greater the temperature difference between the input reservoir and the output reservoir
a. the less the efficiency
b. none of these responses- efficiency doesn't depend on temperature difference
c. depends on the cycle
d. the greater the efficiency
      

8) It is possible to totally convert a given amount of mechanical energy into heat
a. True
b. False

9) When a volume of air is compressed and no neat enters or leaves, the air temperature will
a. decrease
b. remain unchanged
c. not enough information to say what happens to the air temperature
d. increase
      
10)If you try to cool your kitchen on a hot day by opening the refrigerator door, the temperature in your kitchen will
a. not enough information to say what will happen to the temperature
b. remain unchanged
c. decrease
d. increase

Explanation / Answer

1.

d. Temperature remains constant

2.

first law is

dQ=du+dw

c. conservation of energy

3.

b. TC = 0 K

4.

a. false

5.

a. neither increased nor decreased

6.

d. No heat exchange occurs

7.

d. the greater the efficiency
  

8.

b. false

9.

d). increase

10.

b. remain unchanged

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.