Related Questions

The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.
A P, Q and R
B P and R
C R and S
D P, R and S
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.
A Plus
B Minus
C Divide
D None of these
The ratio of the discharge pressure to the inlet pressure of air is called
A Compression ratio
B Expansion ratio
C Compressor efficiency
D Volumetric efficiency
Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.
A Smaller than
B Larger than
C Same as
D Twice
The ratio of rate of change of the discharge of an outlet to the rate of change of the discharge of distributing channel is called
A proportionality
B flexibility
C setting
D sensitivity
The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.
A Equal to
B One-half
C Three fourth
D Double
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)
A $${\left( {\frac{{\text{q}}}{{\text{g}}}} \right)^{\frac{1}{2}}}$$
B $${\left( {\frac{{{{\text{q}}^2}}}{{\text{g}}}} \right)^{\frac{1}{3}}}$$
C $${\left( {\frac{{{{\text{q}}^3}}}{{\text{g}}}} \right)^{\frac{1}{4}}}$$
D $${\left( {\frac{{{{\text{q}}^4}}}{{\text{g}}}} \right)^{\frac{1}{5}}}$$
The ratio of actual discharge to theoretical discharge through an orifice is equal to
A Cc.Cv
B Cc.Cd
C Cv.Cd
D $$\frac{{{{\text{C}}_{\text{d}}}}}{{{{\text{C}}_{\text{v}}}}}$$
The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is
A 0.555
B 0.578
C 0.5457
D 0.6
The ratio of exit pressure to inlet pressure for maximum mass flow rate per unit area of steam through a nozzle when steam is initially dry saturated is
A 0.6
B 0.578
C 0.555
D 0.5457

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