Mechanical Engineering - Thermodynamics - Discussion

Discussion Forum : Thermodynamics - Section 1 (Q.No. 20)
20.
The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is
equal to one
less than one
greater than one
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
26 comments Page 3 of 3.

Rakesh vekariya said:   10 years ago
Cp/Cv =gamma >0.
(1)

Kiran pawar said:   9 years ago
Cp/Cv = r = 1.4.
(2)

ABHIJEET YADAV said:   9 years ago
Cp will be greater than cv because at constant pressure some work is to be due to displacement of piston whereas in constant volume the piston remains in its same place, therefore, no work is done.

So, cp will greater than cv that's why it is greater than 1.
(1)

Mandai Nayagan said:   9 years ago
Cp is alway greater than Cv.
(1)

Anik Babu said:   9 years ago
Why it is 1.33 and 1.40?

I have answer for 1.67 but not for those. Will anyone explain me?
(1)

Ashiq said:   9 years ago
I have a doubt, the ratio of specific of gas at a constant pressure and constant volume is constant or varying.
(1)


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