A diathermic wall is one which____________________?

Byadmin January 26, 2019August 16, 2021

A diathermic wall is one which____________________?

A. prevents thermal interaction
B. permits thermal interaction
C. encourages thermal interaction
D. discourages thermal interaction
E. does not exist

Thermodynamics

On weight basis, air contains following parts of oxygen_________________?

On weight basis, air contains following parts of oxygen_________________?

A. 21
B. 23
C. 25
D. 73
E. 79

Read More On weight basis, air contains following parts of oxygen_________________?
Thermodynamics

If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly_________________?

If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly_________________?

A. temperature
B. enthalpy
C. internal energy
D. entropy
E. all of the above

Read More If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly_________________?
Thermodynamics

The efficiency of Carnot cycle is maximum for_____________________?

The efficiency of Carnot cycle is maximum for_____________________?

A. gas engine
B. well lubricated engine
C. petrol engine
D. steam engine
E. reversible engine

Read More The efficiency of Carnot cycle is maximum for_____________________?
Thermodynamics

The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is________________?

The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is________________?

A. 29.27 J/kmol°K
B. 83.14J/kmol°K
C. 848J/kmol°K
D. All J/kmol °K
E. 735 J/kmol °K

Read More The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is________________?
Thermodynamics

The ratio of two specific heats of air is equal to____________________?

The ratio of two specific heats of air is equal to____________________?

A. 0.17
B. 0.24
C. 0.1
D. 1.41
E. 2.71

Read More The ratio of two specific heats of air is equal to____________________?
Thermodynamics

Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?

Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?

A. pressure
B. temperature
C. volume
D. internal energy
E. entropy

Read More Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?

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