Why can’t the density be assumed as constant for compressible fluids?a) It shows variation with temperature and pressureb) It remains constant with temperature and pressurec) It becomes almost constant at very high temperatured) None of the mentioned 7.What is the variation observed in temperature in atmosphere with respect to elevation?

It remains constant with temperature and pressurec) It becomes almost constant at very high temperatured) None of the mentioned 7.What is the variation observed in temperature in atmosphere with respect to elevation?a) It goes on decreasing with heightb) It goes on increasing with height

It shows variation with temperature and pressureb) It remains constant with temperature and pressurec) It becomes almost constant at very high temperatured) None of the mentioned 7.What is the variation observed in temperature in atmosphere with respect to elevation?a) It goes on decreasing with height

It remains constant with temperature and pressurec) It becomes almost constant at very high temperatured) None of the mentioned 7.What is the variation observed in temperature in atmosphere with respect to elevation?a) It goes on decreasing with heightb) It goes on increasing with height

It becomes almost constant at very high temperatured) None of the mentioned 7.What is the variation observed in temperature in atmosphere with respect to elevation?a) It goes on decreasing with heightb) It goes on increasing with heightc) It first increases then decreases

None of the mentioned 7.What is the variation observed in temperature in atmosphere with respect to elevation?a) It goes on decreasing with heightb) It goes on increasing with heightc) It first increases then decreasesd) It first decreases then increasesView Answer

What is the variation observed in temperature in atmosphere with respect to elevation?

It goes on decreasing with height

It goes on increasing with height

It first increases then decreases

It first decreases then increases

Why can‚Äö√Ñ√∂‚àö√ë‚àö¬•t the density be assumed as constant for compressible fluids?$

It remains constant with temperature and pressure

It shows variation with temperature and pressure

It remains constant with temperature and pressure

It becomes almost constant at very high temperature

17 + Mcqs in Pressure Point Compressible Fluid in Fluid Mechanics Page 1 McqOptions

1.	A simple U tube manometer connected to a pipe in which liquid is flowing with uniform speed will give which kind of pressure?
A.	Absolute Pressure
B.	Vacuum Pressure
C.	Gauge Pressure
D.	None of the mentioned
Answer» D. None of the mentioned

2.	For dynamic fluid motion in a pipe, the pressure measurement cannot be carried out accurately by manometer.
A.	True
B.	False
Answer» B. False

3.	As we go upwards, at height there is slight decrease in pressure variation.
A.	True
B.	False
Answer» B. False

5.	Calculate the pressure of air at a height of 3500m from sea level where pressure and temperature of air are 10 N/cm2 and 25℃ respectively. The temperature lapse rate is given as 0.0065 ℃ /m. Take density of air at sea level equal to 1.2 kg/m3.
A.	19.7 N/cm2
B.	9.85 N/cm2
C.	4.93 N/cm2
D.	6.24 N/cm2
Answer» C. 4.93 N/cm2

6.	Calculate the pressure at a height of 6500m above the sea level if the atmospheric pressure is 10.145 N/cm2 and temperature is 25℃ assuming air is incompressible. Take density of air as 1.2 kg/m3. Neglect variation of g.
A.	4.98 N/cm2
B.	2.49 N/cm2
C.	1.24 N/cm2
D.	None of the mentioned
Answer» C. 1.24 N/cm2

7.	The barometric pressure at sea level is 760 mm of Mercury while that on a mountain top is 715 mm. If the density of air is assumed constant at 1.2 kg/m3 , what is the elevation of the mountain top?
A.	510 m
B.	1020 m
C.	255 m
D.	128 m
Answer» B. 1020 m

8.	FOR_DYNAMIC_FLUID_MOTION_IN_A_PIPE,_THE_PRESSURE_MEASUREMENT_CANNOT_BE_CARRIED_OUT_ACCURATELY_BY_MANOMETER.?$
A.	True
B.	False
Answer» B. False

9.	A_simple_U_tube_manometer_connected_to_a_pipe_in_which_liquid_is_flowing_with_uniform_speed_will_give_which_kind_of_pressure?$
A.	Absolute Pressure
B.	Vacuum Pressure
C.	Gauge Pressure
D.	None of the mentioned
Answer» D. None of the mentioned

13.	Pressure variation for compressible fluid is maximum for which kind of process?
A.	Isothermal
B.	Adiabatic
C.	Quasi Static
D.	None of the mentioned
Answer» B. Adiabatic

14.	Calculate the pressure of air at a height of 3500m from sea level where pressure and temperature of air are 10 N/cm² and 25‚Äö√Ñ√∂‚àö√´‚àö√¢ respectively. The temperature lapse rate is given as 0.0065 ‚Äö√Ñ√∂‚àö√´‚àö√¢ /m. Take density of air at sea level equal to 1.2 kg/m³.$
A.	19.7 N/cm<sup>2</sup>
B.	9.85 N/cm<sup>2</sup>
C.	4.93 N/cm<sup>2</sup>
D.	6.24 N/cm<sup>2</sup>
Answer» C. 4.93 N/cm<sup>2</sup>

15.	Calculate the pressure at a height of 6500m above the sea level if the atmospheric pressure is 10.145 N/cm2 and temperature is 25‚Äö√Ñ√∂‚àö√´‚àö√¢ assuming air is incompressible. Take density of air as 1.2 kg/m3. Neglect variation of g.$
A.	4.98 N/cm<sup>2</sup>
B.	2.49 N/cm<sup>2</sup>
C.	1.24 N/cm<sup>2</sup>
D.	None of the mentioned
Answer» C. 1.24 N/cm<sup>2</sup>

17.	If the atmospheric pressure at sea level is 7.5 N/cm2, determine the pressure at a height of 3000m assuming the pressure variation follows isothermal law. The density of air is given as 1.2 km/m3.
A.	4.68 N/cm<sup>2</sup>
B.	9.37 N/cm<sup>2</sup>
C.	2.34 N/cm<sup>2</sup>
D.	None of the mentioned
Answer» B. 9.37 N/cm<sup>2</sup>

Explore topic-wise MCQs in Fluid Mechanics.

A simple U tube manometer connected to a pipe in which liquid is flowing with uniform speed will give which kind of pressure?

For dynamic fluid motion in a pipe, the pressure measurement cannot be carried out accurately by manometer.

As we go upwards, at height there is slight decrease in pressure variation.

Calculate the pressure of air at a height of 3500m from sea level where pressure and temperature of air are 10 N/cm2 and 25℃ respectively. The temperature lapse rate is given as 0.0065 ℃ /m. Take density of air at sea level equal to 1.2 kg/m3.

Calculate the pressure at a height of 6500m above the sea level if the atmospheric pressure is 10.145 N/cm2 and temperature is 25℃ assuming air is incompressible. Take density of air as 1.2 kg/m3. Neglect variation of g.

The barometric pressure at sea level is 760 mm of Mercury while that on a mountain top is 715 mm. If the density of air is assumed constant at 1.2 kg/m3 , what is the elevation of the mountain top?

FOR_DYNAMIC_FLUID_MOTION_IN_A_PIPE,_THE_PRESSURE_MEASUREMENT_CANNOT_BE_CARRIED_OUT_ACCURATELY_BY_MANOMETER.?$

A_simple_U_tube_manometer_connected_to_a_pipe_in_which_liquid_is_flowing_with_uniform_speed_will_give_which_kind_of_pressure?$

As we go upwards, at height there is slight decrease in pressure variation?

What is the variation observed in temperature in atmosphere with respect to elevation?

Why can‚Äö√Ñ√∂‚àö√ë‚àö¬•t the density be assumed as constant for compressible fluids?$

Pressure variation for compressible fluid is maximum for which kind of process?

Calculate the pressure at a height of 6500m above the sea level if the atmospheric pressure is 10.145 N/cm2 and temperature is 25‚Äö√Ñ√∂‚àö√´‚àö√¢ assuming air is incompressible. Take density of air as 1.2 kg/m3. Neglect variation of g.$

The barometric pressure at sea level is 760 mm of Mercury while that on a mountain top is 715 mm. If the density of air is assumed constant at 1.2 kg/m3 , what is the elevation of the mountain top?

If the atmospheric pressure at sea level is 7.5 N/cm2, determine the pressure at a height of 3000m assuming the pressure variation follows isothermal law. The density of air is given as 1.2 km/m3.

The barometric pressure at sea level is 760 mm of Mercury while that on a mountain top is 715 mm. If the density of air is assumed constant at 1.2 kg/m³ , what is the elevation of the mountain top?