Fluid Mechanics and Hydraulic Machines – Quiz 35
Posted by Vishnu on August 9th, 2011 11:57 PM | No Comment
341. Kaplan turbine is a propeller turbine in which the vanes fixed on the hub are
(a) non-adjustable (b) adjustable
(c) fixed (d) none of the above
342. If the head on the turbine is more than 300 m, the type of ...
Fluid Mechanics and Hydraulic Machines – Quiz 34
Posted by Vishnu on August 9th, 2011 11:55 PM | No Comment
331. The work saved bv fitting an air vessel to a double acting reciprocating pump is
(a) 39.2%
(b) 84.8%
(c) 48.8%
(d) 92.3%
332. The pressure, at which separation takes place, is known separa¬tion pressure or separation pressure head. For water, the limiting value ...
Fluid Mechanics and Hydraulic Machines – Quiz 33
Posted by Vishnu on August 9th, 2011 11:54 PM | No Comment
320. The operating characteristic curves of a centrifugal pump are shown in Fig. 1.5.
Curve A is for
(а) Head
(b) Efficiency
(c). Power
(d). None of the above.
321.Curve B in Fig. 1.5 is for
(а) Head
(b) Efficiency
(c). Power
(d). None of the above.
322. Curve B in ...
Fluid Mechanics and Hydraulic Machines – Quiz 32
Posted by Vishnu on August 9th, 2011 11:52 PM | No Comment
311. Governing of a turbine means
a. the head is kept constant under all condition of working
b. the speed is kept constant under all conditions
c. the discharge is kept constant under all conditions
d. none of the above.
312. The work done by ...
Fluid Mechanics and Hydraulic Machines – Quiz 31
Posted by Vishnu on August 9th, 2011 11:51 PM | No Comment
301. The unit speed (Nu) is given by the expression
a.Nu = N / H 3/2
b. Nu =N / H ¾
c. Nu = N / √ H
d. Nu = N / H5/4
302. The unit discharge (Qu) is given by the expression
a. ...
Fluid Mechanics and Hydraulic Machines – Quiz 30
Posted by Vishnu on August 8th, 2011 09:49 PM | No Comment
291.The speed ratio for Pelton wheel varies from
(a) 0.45 to 0.50
(b) 0.6 to 0.7
(c) 0.3 to 0.4
(d) 0.8 to 0.9.
292. The discharge through Pelton Turbine is given by
(a) Q= πDBVδ
(b) Q=π/4 d2 ×√2gH
(c) Q=π/4
(d) None of the above.
293. The ...
Fluid Mechanics and Hydraulic Machines – Quiz 29
Posted by Vishnu on August 8th, 2011 09:47 PM | No Comment
281. The overall efficiency of a turbine is the ratio of
a. Power at the inlet of turbine to the power at the shaft
b. Power at the shaft to the power given to the runner
c. Power at the shaft to ...