Thermodynamics 1

Syllabus

Gate 2007/8

Thermodynamics: Zeroth, First and Second laws of thermodynamics; thermodynamic system and processes; Carnot cycle. irreversibility and availability; behaviour of ideal and real gases, properties of pure substances, calculation of work and heat in ideal processes; analysis of thermodynamic cycles related to energy conversion.





1. Joule is a unit for

a. energy
b. work
c. force
d. momentum

2. One Joule (J) is equal to

a. 10 Nm
b. 1 Nm
c. 1 Nm/s
d. 10 Nm/s

3. A system in which heat and work cross the boundary of the system, but not mass is called

a. Isolated system
b. open system
c. closed system
d. reversible system

4. Second law of thermodynamics defines

a. work
b. internal energy
c. entropy
d. enthalpy

5. The value of one bar (in S.I. units) is equal to

a. 100 N/m2
b. 1*10^5 N/m2
c. 1000 N/m2
d. 1*10^6 N/m2

6. The absolute zero temperature is taken as
(a) -73 0C
b) -273 0C
c) - 237 0C
d) -173 0C

7. The unit of energy in SI units is
a. Watt
b. Joule
c. Erg
d. Newton

8. One watt is equal to
a. Jm
b. J/s
c. 10 Nm
d. Erg/m

9. The value of gas constant (R) in SI units is

a. 287 J/kg/K
b. 28.7 J/kg/K
c. 2.87 J/kg/K
d. 0.287 J/kg/K

10. 1 gm mole of all gases at NTP occupy a volume of

a. 0.224 litres
b. 2.24 litres
c. 22.4 litres
d. 224 litres