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Hydraulic Machines
Comments
Question
The Furneyron turbine is __________ reaction turbine.
Options
A. an axial flow
B. an inward flow
C. an outward flow
D. a mixed flow
Correct Answer
an outward flow
Hydraulic Machines problems
Search Results
1. The cavitation in a hydraulic machine is mainly due to
Options
A. low velocity
B. high velocity
C. low pressure
D. high pressure
Show Answer
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Discuss
Correct Answer: low pressure
2. The flow ratio in case of Francis turbine varies from
Options
A. 0.15 to 0.3
B. 0.4 to 0.5
C. 0.6 to 0.9
D. 1 to 1.5
Show Answer
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Correct Answer: 0.15 to 0.3
3. The Thomson's turbine is __________ reaction turbine.
Options
A. an axial flow
B. an inward flow
C. an outward flow
D. a mixed flow
Show Answer
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Discuss
Correct Answer: an inward flow
4. The efficiency of a hydraulic press is given by (where
W
= Weight lifted by ram,
P
= Force applied on plunger,
A
= Area of ram, and
a
= Area of plunger)
Options
A.
B.
C.
D.
Show Answer
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Discuss
Correct Answer:
5. The discharge through a turbine is
Options
A. directly proportional to
H
1/2
B. inversely proportional to
H
1/2
C. directly proportional to
H
3/2
D. inversely proportional to
H
3/2
Show Answer
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Correct Answer: directly proportional to
H
1/2
6. The head available at the inlet of the turbine is known as net or effective head.
Options
A. Correct
B. Incorrect
Show Answer
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Discuss
Correct Answer: Correct
7. A Francis turbine is an outward flow reaction turbine.
Options
A. True
B. False
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Correct Answer: False
8. Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?
Options
A. Hydraulic ram
B. Hydraulic intensifier
C. Hydraulic torque converter
D. Hydraulic accumulator
Show Answer
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Discuss
Correct Answer: Hydraulic torque converter
9. In an axial flow reaction turbine, the water flows __________ to the axis of the wheel.
Options
A. parallel
B. perpendicular
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Correct Answer: parallel
10. The overall efficiency for a Pelton wheel lies between
Options
A. 0.50 to 0.65
B. 0.65 to 0.75
C. 0.75 to 0.85
D. 0.85 to 0.90
Show Answer
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Correct Answer: 0.85 to 0.90
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