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Bernoulli's equation cannot be applies when the flow is
1. rotational
2. turbulent
3. unsteady
4. all of the above
Streamline and equipotential lines in a flow field
1. are parallel to each other
2. are identical to each other
3. are perpendicular to each other
4. intersect at acute angles
Relative density of mercury is
1. 1
2. 9.8
3. 13.6
4. 1000
a newtonian fluid is defined as the fluid which
1. obeys Hook's law
2. is compressible
3. obey's newton law of viscosity
4. is incompressible
A flow is called super sonic if the
1. velocity of flow is very high
2. discharge is diffucult to measure
3. mach number is between 1 and 5
4. none of the above
The unit of pressure one bar is
1. 1 Pascal
2. 1 kilo pascal
3. 100 k pascal
4. 1000 k pascal
The continuity equation is the result of application of the following law to the flow field
1. first law of thermodynamics
2. conservation of energy
3. newtons second law
4. conservation of mass
Reynolds number signifies the ratio of
1. gravity forces top viscous force
2. inertial forces to viscous forces
3. inertial force to gravity
4. none of these
In pipe flow the critical reynolds number is about
1. 640
2. 5*10
3. 2000
4. 64000
anemometer is used to measure
1. velocity
2. pressure
3. viscosity
4. density
property of fluid that describes its internal resistance is known as:
1. viscosity
2. friction
3. resistance
4. internal energy
which fluid does not experience shrearing stress during flow?
1. pseudoplastic
2. dilatant
3. newtonian
4. inviscid
Stress strain relationship for newtonian fluid is
1. parabolic
2. hyperbolic
3. linear
4. inverse type
In a pressure cooker, the food is cooked faster because
1. increased pressure lowers the boiling point.
2. increased pressure raises the boiling point.
3. decreased pressure raises the boiling point.
4. increased pressure lowers the melting point.
Clouds float in atmosphere because of their low
1. density
2. pressure
3. mass
4. velocity
The size of an air bubble rising up in water
1. decrease
2. increase
3. remain still
4. may increase or decrease
Speed of an objects with direction is defined as
1. pressure
2. velocity
3. mass
4. none of the above
Treatment given for healing sickness
1. relaxation
2. piston
3. therapy
4. none of the above
Changes in an object's shape or form due to the application of a force or forces.
1. formation
2. deformation
3. therapy
4. none of the above
No change in volume if a pressure is applied.
1. cpmpressible
2. incompressible
3. both A and B
4. none of the above
Large piece of ice floating in water.
1. hydraulic system
2. icebery
3. piston
4. all of the above
Person who is specially trained to travel into outer space
1. pilot
2. army man
3. Astronaut
4. none of the above
The force which produces compression is called
1. pressure
2. thrust
3. altitude
4. none of these
Vertical distance in the up direction
1. thrust
2. pressure
3. altitude
4. none of these
is known as mass per unit volume of a body
1. relative density
2. density
3. thrust
4. none of these
is an instrument used to measure atmospheric pressure.
1. axes
2. thermometer
3. barometer
4. none of these
The upward force experienced by a body when partly or fully immersed in a fluid is called
1. upthrust force
2. bouyant force
3. both Aand B
4. none of these
is an experiment that demonstrates the principle of buoyancy
1. Cartesian diver
2. axes
3. both A and B
4. none of these
an instrument used to check the purity of milk
1. hydrometer
2. lactometer
3. barometer
4. none of these
The formula of density=
1. mass*volume
2. mass+volume
3. mass/volume
4. volume/mass
The instrument used to measure atmospheric pressure
1. hydrometer
2. lactometer
3. barometer
4. none of these

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