Questions and answers for exam Preparation

MCQs

Total Questions : 1709 | Page 141 of 171 pages

Question 1401. An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be________________?

4 kN/m2
10 kN/m2
12 kN/m2
14 kN/m2

Discuss Question

Answer: Option D. -> 14 kN/m2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1402. A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is________________?

5kN
10kN
15 kN
20 kN

Discuss Question

Answer: Option B. -> 10kN
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1403. Centre of buoyancy always_________________?

coincides with the centre of gravity
coincides with the centroid of the volume of fluid displaced
remains above the centre of gravity
remains below the centre of gravity

Discuss Question

Answer: Option B. -> coincides with the centroid of the volume of fluid displaced
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1404. An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to_______________?

g/3
g/2
2g/3
g

Discuss Question

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

Question 1405. The horizontal component of force on a curved surface is equal to the_______________?

product of pressure intensity at its centroid and area
force on a vertical projection of the curved surface
weight of liquid vertically above the curved surface
force on the horizontal projection of the curved surface

Discuss Question

Answer: Option B. -> force on a vertical projection of the curved surface
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1406. The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to_______________?

PA
pA sin 9
pA cos 9
pA tan 9

Discuss Question

Answer: Option A. -> PA
WHERE P IS PRESSURE INTENSITY AT CENTROID OF AREA AND A IS AREA OF PLANE SURFACE

Question 1407. If a vessel containing liquid moves downward with a constant acceleration equal to ‘g’ then_____________?

the pressure throughout the liquid mass is atmospheric
there will be vacuum in the liquid
the pressure in the liquid mass is greater than hydrostatic pressure
none of the above

Discuss Question

Answer: Option A. -> the pressure throughout the liquid mass is atmospheric
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1408. Metacentric height for small values of angle of heel is the distance between the________________?

centre of gravity and centre of buoy-ancy
centre of gravity and metacentre
centre of buoyancy and metacentre
free surface and centre of buoyancy

Discuss Question

Answer: Option B. -> centre of gravity and metacentre
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1409. In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is_________________?