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
Discussion:
26 comments Page 1 of 3.
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)
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?
I have answer for 1.67 but not for those. Will anyone explain me?
(1)
Mandai Nayagan said:
9 years ago
Cp is alway greater than Cv.
(1)
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.
So, cp will greater than cv that's why it is greater than 1.
(1)
Kiran pawar said:
9 years ago
Cp/Cv = r = 1.4.
(2)
Rakesh vekariya said:
10 years ago
Cp/Cv =gamma >0.
(1)
Manish singh said:
10 years ago
Because cv is always greater than 1.
(1)
Priya said:
1 decade ago
cp/cv = Gamma = 1.4 = Constant.
(1)
Jay Patel said:
1 decade ago
Why CP is greater than 1?
(1)
Ashish said:
1 decade ago
Cp/Cv = Gamma, which is the indices of the process and depends on the process. For isotropic process its 1.4, for polytropic process its n, for constant pressure process its zero, for constant volume process its infinite, for constant temperature process its equal to 1.
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