Questions and answers for exam Preparation

MCQs

Total Questions : 1709 | Page 169 of 171 pages

Question 1681. Principle of similitude forms the basis of__________________?

comparing two identical equipments
designing models so that the result can be converted to prototypes
comparing similarity between design and actual equipment
hydraulic designs
performing acceptance tests

Discuss Question

Answer: Option B. -> designing models so that the result can be converted to prototypes
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1682. For pipes, turbulent flow occurs when Reynolds number is_________________?

less than 2000
between 2000 and 4000
more than 4000
less than 4000
none of the above

Discuss Question

Answer: Option C. -> more than 4000
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1683. The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to________________?

1 Pa
91Pa
981 Pa
9810 Pa
98,100 Pa

Discuss Question

Answer: Option D. -> 9810 Pa
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1684. Bernoulli equation deals with the law of conservation of____________________?

mass
momentum
energy
work
force

Discuss Question

Answer: Option C. -> energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1685. A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal tc__________________?

10 kg
100 kg
1000 kg
1 kg
10,000 kg

Discuss Question

Answer: Option A. -> 10 kg
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1686. Cavitation is caused by___________________?

high velocity
high pressure
weak material
low pressure
low viscosity

Discuss Question

Answer: Option D. -> low pressure
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1687. In order that flow takes place between two points in a pipeline, the differential pressure between thes^ points must be more than_________________?

frictional force
viscosity
surface friction
all of the above
none of the above

Discuss Question

Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1688. A large Roynold number is indication of_________________?

smooth and streamline flow
laminar flow
steady flow
turbulent flow
highly turbulent flow

Discuss Question

Answer: Option E. -> highly turbulent flow
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1689. Mach number is significant in___________________?

supersonics, as with projectiles and jet propulsion
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls
all of fhe above
none of the above

Discuss Question

Answer: Option A. -> supersonics, as with projectiles and jet propulsion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1690. According to Bernoulli’s equation for steady ideal fluid flow_______________?