Boundary layer exists in flow_________________?
A. Of real fluids
B. Over flat surfaces only
C. In pipes only
D. Of ideal fluids only
Fluid Mechanics for Chemical
The capillary rise of mercury is maximum in glass tube of dia _____________ mm?
The capillary rise of mercury is maximum in glass tube of dia _____________ mm?
A. 0.5
B. 1
C. 2
D. 5
Laminar flow is characterised by the nonexistence of_________________?
Laminar flow is characterised by the nonexistence of_________________?
A. Pressure fluctuation
B. Eddies
C. Deviating velocities
D. All A., B. & C.
The maximum depth from which a centrifugal pump can draw water is________________?
The maximum depth from which a centrifugal pump can draw water is________________?
A. Dependent on the speed of the pump
B. Dependent on the power of the pump
C. 34 feet
D. 150 feet
The pressure and power requirement of a gas fan at constant speed & capacity varies ____________ the gas density?
The pressure and power requirement of a gas fan at constant speed & capacity varies ____________ the gas density?
A. Directly as
B. Inversely as square root of
C. Inversely as
D. As square of
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump_________________?
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump_________________?
A. Develops a lower head
B. Capacity is reduced
C. Requires more power
D. All A., B. and C.
A 2″ gate valve fitted in a pipe is replaced by a similar globe valve. Pressure drop in gate valve was Δp. For the same discharge, the pressure drop across globe valve is__________________?
A 2″ gate valve fitted in a pipe is replaced by a similar globe valve. Pressure drop in gate valve was Δp. For the same discharge, the pressure drop across globe valve is__________________?
A. Δp
B. < Δp
C. > Δp
D. Δp2
The co-efficient of discharge of an orificemeter is a function of ________________?
The co-efficient of discharge of an orificemeter is a function of ________________?
A. Reynolds number at the orifice
B. Ratio of orifice dia to pipe dia
C. Both A. and B.
D. None of the above parameters, and has a constant value of 0.61
A streamline is a line in flow field _________________?
A streamline is a line in flow field _________________?
A. That is traced by all the fluid particles passing through a given point
B. Along which a fluid particle travels
C. Such that at every point on it, the velocity is tangential to it
D. None of these
Bernoulli’s equation for steady, frictionless, continuous flow states that the ______________ at all sections is same?
Bernoulli’s equation for steady, frictionless, continuous flow states that the ______________ at all sections is same?
A. Total pressure
B. Total energy
C. Velocity head
D. None of these