CuriousTab
Search
CuriousTab
Home
Aptitude
Computer
C Programming
C# Programming
C++ Programming
Database
Java Programming
Networking
Engineering
Biochemical Engineering
Biochemistry
Biotechnology
Chemical Engineering
Civil Engineering
Computer Science
Digital Electronics
Electrical Engineering
Electronics
Electronics and Communication Engineering
Mechanical Engineering
Microbiology
Technical Drawing
GK
Current Affairs
General Knowledge
Reasoning
Data Interpretation
Logical Reasoning
Non Verbal Reasoning
Verbal Ability
Verbal Reasoning
Exams
AIEEE
Bank Exams
CAT
GATE
IIT JEE
TOEFL
Jobs
Analyst
Bank PO
Database Administrator
IT Trainer
Network Engineer
Project Manager
Software Architect
Discussion
Home
‣
Mechanical Engineering
‣
Hydraulic Machines
Comments
Question
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
Correct Answer
0.85 to 0.90
Hydraulic Machines problems
Search Results
1. In an axial flow reaction turbine, the water flows __________ to the axis of the wheel.
Options
A. parallel
B. perpendicular
Show Answer
Scratch Pad
Discuss
Correct Answer: parallel
2. 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
Scratch Pad
Discuss
Correct Answer: Hydraulic torque converter
3. A Francis turbine is an outward flow reaction turbine.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
4. The head available at the inlet of the turbine is known as net or effective head.
Options
A. Correct
B. Incorrect
Show Answer
Scratch Pad
Discuss
Correct Answer: Correct
5. The Furneyron turbine is __________ reaction turbine.
Options
A. an axial flow
B. an inward flow
C. an outward flow
D. a mixed flow
Show Answer
Scratch Pad
Discuss
Correct Answer: an outward flow
6. The gross or total head of the turbine is the __________ of the water levels at the head race and tail race.
Options
A. sum
B. difference
C. product
Show Answer
Scratch Pad
Discuss
Correct Answer: difference
7. Which of the following statement is correct?
Options
A. In an impulse turbine, the water impinges on the buckets with pressure energy.
B. In a reaction turbine, the water glides over the moving vanes with kinetic energy.
C. In an impulse turbine, the pressure of the flowing water remains unchanged and is equal to atmospheric pressure.
D. In a reaction turbine, the pressure of the flowing water increases after gliding over the vanes.
Show Answer
Scratch Pad
Discuss
Correct Answer: In an impulse turbine, the pressure of the flowing water remains unchanged and is equal to atmospheric pressure.
8. Braking jet in an impulse turbine is used
Options
A. to break the jet of water
B. to bring the runner to rest in a short time
C. to change the direction of runner
D. none of these
Show Answer
Scratch Pad
Discuss
Correct Answer: to bring the runner to rest in a short time
9. A hydraulic accumulator is a device used to store __________ energy which may be supplied to a machine later on.
Options
A. strain
B. pressure
C. kinetic
Show Answer
Scratch Pad
Discuss
Correct Answer: pressure
10. A reciprocating pump is also called a __________ displacement pump.
Options
A. positive
B. negative
Show Answer
Scratch Pad
Discuss
Correct Answer: positive
Comments
There are no comments.
Enter a new Comment
Save
More in Mechanical Engineering:
Automobile Engineering
Compressors, Gas Dynamics and Gas Turbines
Engineering Materials
Engineering Mechanics
Heat Transfer, Refrigeration and Air Conditioning
Hydraulic Machines
Hydraulics and Fluid Mechanics
IC Engines and Nuclear Power Plants
Industrial Engineering and Production Management
Machine Design
Production Engineering
Steam Boilers and Engines
Steam Nozzles and Turbines
Strength of Materials
Theory of machines
Thermodynamics
Workshop Technology