A. 2
B. 2.828
C. 5.657
D. 4
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Related Mcqs:
- Co-efficient of discharge (Cd) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about__________________?
A. 0.42
B. 0.62
C. 0.82
D. 0.98 - The discharge through a V-notch weir varies as___________________?
A. H3/2
B. H1/2
C. H5/2
D. H2/3 - The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the_________________?
A. Discharge
B. Suction
C. Suction minus vapor pressure of the liquid at suction temperature
D. Discharge minus vapor pressure of the liquid at the discharge temperature - The maximum discharge through a circular channel takes place, when the depth of the fluid flow is ______________ times the pipe diameter?
A. 0.25
B. 0.5
C. 0.66
D. 0.95 - The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge) ?
A. Q1/Q2
B. Q2/Q1
C. (Q2 – Q1)/Q1
D. (Q2 – Q1)/Q2 - The ratio of actual discharge to theoretical discharge through an orifice is equal to______________?
A. Cc . Cv
B. Cc . Cd
C. Cv . Cd
D. Cd/Cv - Velocity head on sudden enlargement in a horizontal pipe is converted into ______________ head?
A. Elevation
B. Pressure
C. Both A. & B.
D. Neither A. nor B. - A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, then the new head will be ______________ metres?
A. 2
B. 4
C. 8
D. 5.5 - For laminar flow of a shear thinning liquid in a pipe, if the volumetric flow rate is doubled, the pressure gradient will increase by a factor of_________________?
A. 2
B. 2
D. 1/2 - A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, the new discharge will be __________ litres/minute ?
A. 500
B. 200
C. 1000
D. 750
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