Hydraulic Machines - Part 1 Online Exam Quiz
Hydraulic Machines - Part 1 GK Quiz. Question and Answers related to Hydraulic Machines - Part 1. MCQ (Multiple Choice Questions with answers about Hydraulic Machines - Part 1
Power required to drive a centrifugal pump is directly proportional to __________ of its impeller.
Options
A : diameter
B : square of diameter
C : cube of diameter
D : fourth power of diameter
The mechanical efficiency of an impulse turbine is
Options
A : ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
B : ratio of the actual work available at the turbine to the energy imparted to the wheel
C : ratio of the Work done on the wheel to the energy of the jet
D : none of the above
The overshot water wheels are those in which the wheel runs entirely by the __________ of water.
Options
A : weight
B : impulse
C : -
D : -
In a Kaplan turbine runner, the number of blades are generally between
Options
A : 2 to 4
B : 4 to 8
C : 8 to l6
D : 16 to 24
If H g is the gross or total head and h f is the head lost due to friction, then net or effective head ( H ) is given by
Options
A : H = H g / h f
B : H = H g x h f
C : H = H g + h f
D : H = H g - h f
Discharge of a centrifugal pump is
Options
A : directly proportional to diameter of its impeller
B : inversely proportional to diameter of its impeller
C : directly proportional to (diameter) 2 of its impeller
D : inversely proportional to (diameter) 2 of its impeller
A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit power of the wheel is
Options
A : 0.25 kW
B : 0.75 kW
C : 1.75 kW
D : 3.75 kW
The static head of a centrifugal pump is equal to the __________ of suction head and delivery head.
Options
A : product
B : difference
C : sum
D : -
The ratio of actual work available at the turbine to the energy imparted to the wheel is known as __________ efficiency.
Options
A : hydraulic
B : mechanical
C : overall
D : -
Geometric similarity is said to exist between the model and the prototype, if both of them
Options
A : have identical velocities
B : are equal in size and shape
C : are identical in shape, but differ only in size
D : have identical forces
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