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Mechanical Engineering - Thermodynamics

Exercise : Thermodynamics - Section 3
1.
For the same compression ratio, the efficiency of dual combustion cycle is
greater than Diesel cycle and less than Otto cycle
less than Diesel cycle and greater than Otto cycle
greater than Diesel cycle
less than Diesel cycle
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In an irreversible process, there is a
loss of heat
no loss of heat
gain of heat
no gain of heat
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The amount of heat required to raise the temperature of unit mass of a gas through one degree at constant pressure is called specific heat at constant pressure.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
The change of entropy, when heat is removed from the gas, is negative.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Coke is produced
when coal is first dried and then crushed to a fine powder by pulverising machine
from the finely ground coal by moulding under pressure with or without a binding material
when coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel
by heating wood with a limited supply of air to a temperature not less than 280°C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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