Energy may be defined as
A.the capacity to do work
B.the product of mass and acceleration
C.the rate of doing work
D.the product of force and velocity
A.the capacity to do work
B.the product of mass and acceleration
C.the rate of doing work
D.the product of force and velocity
A.relates to a considerable increase of viscosity with decrease in temperature
B.refers to the change of phase from liquid to solid
C.refers to sudden discontinuity in fluid properties
D.none of the above
A.thermonuclear reactions
B.chemical reactions
C.gravity
D.none of the above
A.Tp4 + Ta4
B.Tp – Ta
C.Tp4 – Ta4
D.Tp2 – Ta2
A.transfers energy from a low level of temperature to a high level of temperature
B.requires the addition of external work for its operation
C.performs the reverse effect of the heat engine
D.all of the above
A.90?
B.180?
C.0?
D.360?
A.1 bar
B.2 bar
C.3 bar
D.7 bar
A.5-25 m-1
B.5-25 cm-1
C.5-25 mm-1
D.5-25 km-1
A.exists in gas liquid and solid phases simultaneously
B.changes directly from solid to vapour
C.loses phase distinction between liquid and vapour
D.behaves as an ideal gas
A.3-Jul
B.2-Jan
C.21-Jun
D.21-Mar