thermodymics

thermodymics

thermodynamics can be define in two words, thermo means heat and dynamics means moving.

published on July 09, 2013
1/20

an ideal gas compressed isothermally. what is the enthalpy change?

always positive
always negative
undifined
zero
2/20

mechanical energy of pressure transformed into energy of heat.

kinetic energy
enthalpy
heat exchanger
heat compression
3/20

which of the following is commonly used as liquid adsorbent?

silica gel
activated alumina
ethylene glycol
none of these
4/20

the volume of fluid passing a cross-section of steam of steam in unit time.

steady flow
uniform flow
discharge
continuous flow
5/20

what is the SI unit of force?

pound
newton
kilogram
dyne
6/20

the state of a thermodynamic system is always defined by its.

absolute temp.
process
properties
temp. and pressure
7/20

what is the avogadro's number?

6.02252x10^23
6.02225x10^23
6.202252x10^23
6.20252x10^23
8/20

which of the ff relations defines enthalpy?

h= u + p/T
h= u + pV
h= u + p/V
h=u + pT
9/20

the thermodynamic cycle used in a thermal power plant.

10/20

instrument used to measure fluid density.

11/20

for bodies in thermal equilibrium with environment, the ratio of total emissive power to the absorptivity is constant at any temp.

stefan-boltzmann law
plank's law
kirchhoffs law
maxwell's law
12/20

absolute temp. on the fahrenheit scale are called

degrees Rankine
degrees kelvin
absolute Fahrenheit
absolute Celsius
13/20

the device that measures temp. by electromotive force

thermometer
thermocouple
electro-thermometer
thermoseebeck
14/20

the only base unit with a prefix kilo is

kilogram
kilometer
kilojoule
kilopascal
15/20

a system in which there is a flow of mass across boundaries

16/20

which of the engine is used for fighter bombers?

turboprop
turbojet
ramjet
pulsejet
17/20

another name for constant volume

Hint: 2 choices
isochoric
isovolumetric
isometric
isochometric
18/20

super vapor behaves

just as gas
just as steam
just an ordinary vapor
approximately as a gas
19/20

mechanism designed to lower the temperature of air passing through it

air cooler
air defense
air spill over
air cycle
20/20

randomness or disorder