BTD_2024-25

The sequence of processes that eventually returns the working substance to it original state, is known as

• 
  thermodynamic property

• Event

• thermodynamic cycle

• thermodynamic process

Thermal equilibrium between 2 or more bodies exists, when they are brought together , there is no change in

• 
  Density

• Pressure

• Temperature

• Volume

Heat transfer for isothermal process is

• 
  Zero

• One

• Q=W

• Q=U

In the polytropic process equation, PV^n=C, if n=0, the process is known as

• constant volume process

• constant pressure process

• 
  constant temperature process

• adiabatic process

A process, in which the working substance neither receives nor gives out heat to its surroundings during expansion or contraction is known as

• isothermal process

• isentropic process

• Isobaric process

• adiabatic process

Process B on the PV diagram is an ______________ process.

• isothermal process

• isentropic process

• Isobaric process

• isochoric

PMM1

• is the violation of zeroth law

• is the violation of first law

• is the violation of second law

• 
  is the violation of third law

while deriving SFEE the total work transfer is given by

• W=Q-[(h1-h2)+(z1-z2)g+((C1^2-c2^2)/2)

• W=Q-[(h2-h1)+(z2-z1)g+((C2^2-c1^2)/2)

• W=Q

• 
  W=0

110 Joule of heat is added to a gaseous system, whose internal energy is 40 J.

Then the amount of external work done is

• 150 J

• 
  70 J

• 110 J

• 
  40 J

Relation between cop of heat pump and refrigerator

• COP(Heat Pump)=COP(Refrigerator)+1

• COP(Refrigerator)=COP(Heat Pump)+1

• COP(Heat Pump)=COP(Refrigerator)

• 
  COP(Heat Pump)+COP(Refrigerator)=1