# Atmospheric pressure is 1.03 kg/cm and vapor pressure is 0.03 kg/cm. The air pressure will be

1.  1.03 kg/cm2

2.  1.06 kg/cm2

3.  1.00 kg/cm2

4.  0.53 kg/cm2

4

1.00 kg/cm2

Explanation :
No Explanation available for this question

# The pressure ratio of an ideal vaned compressor with increase in mass flow rate

1.  increases

2.  decreases

3.  remains constant

4.  first decreases and then increases

4

remains constant

Explanation :
No Explanation available for this question

# Rotary compressors are suitable for

1.  large discharge at high pressure

2.  low discharge at high pressure

3.  large discharge at low pressure

4.  low discharge at low pressure

4

large discharge at low pressure

Explanation :
No Explanation available for this question

# The volumetric efficiency of compressor with increase in compression ratio will

1.  increase

2.  decrease

3.  remain same

4.  may increase/decrease depending on clearance volume

4

decrease

Explanation :
No Explanation available for this question

# Stalling of blades in axial flow compressor is the phenomenon of

1.  air stream blocking the passage

2.  motion of air at sonic velocity

3.  unsteady periodic and reversed flow

4

Explanation :
No Explanation available for this question

# Pick up the wrong statement

1.  centrifugal compressors deliver practically constant pressure over a considerable range of capacities

2.  Axial flow compressors have a substantially constant delivery at variable pressures

3.  centrifugal compressors have a wider stable operating range than axial flow compressors

4.  axial flow compressors are bigger in diameter compared to centrifugal type

4

axial flow compressors are bigger in diameter compared to centrifugal type

Explanation :
No Explanation available for this question

# The work ratio of a gas turbine plant is defined as the ratio of

1.  network output and heat supplied  network output and work done by turbine

2.  actual heat drop and isentropic heat drop

3.  network output and isentropic heat drop

4.  isentropic increase/drop in temperature and actual increase/ drop in temperature

4

actual heat drop and isentropic heat drop

Explanation :
No Explanation available for this question

# Gas turbine works on

1.  Brayton or Atkinson cycle

2.  Carnot cycle

3.  Rankine cycle

4.  Erricsson cycle

4

Brayton or Atkinson cycle

Explanation :
No Explanation available for this question

# The work ratio of simple gas turbine cycle depends on

1.  pressure ratio

2.  maximum cycle temperature

3.  minimum cycle temperature

4.  all of the above

4

all of the above

Explanation :
No Explanation available for this question

# The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is

1.  low

2.  high

3.  same

4.  low/high depending on make and type

4