thermodymics

thermodymics

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

published on July 09, 201310 responses 0

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

always positive
always negative
undifined
zero

mechanical energy of pressure transformed into energy of heat.

kinetic energy
enthalpy
heat exchanger
heat compression

which of the following is commonly used as liquid adsorbent?

silica gel
activated alumina
ethylene glycol
none of these

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

steady flow
uniform flow
discharge
continuous flow

what is the SI unit of force?

pound
newton
kilogram
dyne

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

absolute temp.
process
properties
temp. and pressure

what is the avogadro's number?

6.02252x10^23
6.02225x10^23
6.202252x10^23
6.20252x10^23

which of the ff relations defines enthalpy?

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

the thermodynamic cycle used in a thermal power plant.

instrument used to measure fluid density.

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

absolute temp. on the fahrenheit scale are called

degrees Rankine
degrees kelvin
absolute Fahrenheit
absolute Celsius

the device that measures temp. by electromotive force

thermometer
thermocouple
electro-thermometer
thermoseebeck

the only base unit with a prefix kilo is

kilogram
kilometer
kilojoule
kilopascal

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

which of the engine is used for fighter bombers?

turboprop
turbojet
ramjet
pulsejet

another name for constant volume

Select the two correct answers
isochoric
isovolumetric
isometric
isochometric

super vapor behaves

just as gas
just as steam
just an ordinary vapor
approximately as a gas

mechanism designed to lower the temperature of air passing through it

air cooler
air defense
air spill over
air cycle

randomness or disorder