# Carnot cycle efficiency depends upon

1.  Properties of the medium/substance used

2.  Condition of engine

3.  Working condition

4.  Temperature range of operation

4

Temperature range of operation

Explanation :
No Explanation available for this question

# If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly

1.  Temperature

2.  Enthalpy

3.  Internal energy

4.  Entropy

4

Entropy

Explanation :
No Explanation available for this question

# If a system after undergoing a series of processes, returns to the initial state then

1.  Process is thermodynamically in equilibrium

2.  Process is executed in closed system cycle

3.  Its entropy will change due to irreversibility

4.  Sum of heat and work transfer will be zero

4

Sum of heat and work transfer will be zero

Explanation :
No Explanation available for this question

# Which of the following represents the perpetual motion of the first kind

1.  Engine with 100% thermal efficiency

2.  A fully reversible engine

3.  Transfer of heat energy from low temperature source to high temperature source

4.  A machine that continuously creates its own energy

4

A machine that continuously creates its own energy

Explanation :
No Explanation available for this question

# An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is

1.  Feasible

2.  Impossible

3.  Possible

4.  Possible, but with lot of sophistication

4

Possible, but with lot of sophistication

Explanation :
No Explanation available for this question

# Gas turbine cycle consists of

1.  Two isothermal and two isotropic

2.  Two is entropics and two constant volumes

3.  Two is entropics, one constant volume and one constant pressure

4.  Two is entropics and two constant pressures

4

Two is entropics and two constant pressures

Explanation :
No Explanation available for this question

# In a Carnot cycle, heat is transferred at:

1.  Constant pressure

2.  Constant volume

3.  Constant temperature

4.   Constant enthalpy

4

Constant temperature

Explanation :
No Explanation available for this question

# A diathermy wall is one which:

1.  Prevents thermal interaction

2.  Permits thermal interaction

3.  Encourages thermal interaction

4.  Discourages thermal interaction

4

Permits thermal interaction

Explanation :
No Explanation available for this question

# An adiabatic wall is one which:

1.  Prevents thermal interaction

2.  Permits thermal interaction

3.  Encourages thermal interaction

4.  Discourages thermal interaction

4

Prevents thermal interaction

Explanation :
No Explanation available for this question

# The door of a running refrigerator inside a room was left open. Which of the following statements is correct

1.  The room will be cooled to the temperature inside the refrigerator.

2.  The room will be cooled very slightly.

3.  The room will be gradually warmed up.

4.  The temperature of the air in room will remain unaffected.

4

The room will be gradually warmed up.

Explanation :
No Explanation available for this question

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