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_______________?
(A) g/3
(B) g/2
(C) 2g/3
(D) g
If a vessel containing liquid moves downward with a constant acceleration equal to ‘g’ then_____________?
(A) the pressure throughout the liquid mass is atmospheric
(B) there will be vacuum in the liquid
(C) the pressure in the liquid mass is greater than hydrostatic pressure
(D) none of the above
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________________?
(A) 5kN
(B) lOkN
(C) 15 kN
(D) 20 kN
Coefficient of contraction for an external cylindrical mouthpiece is_________________?
(A) 1.00
(B) 0.855
(C) 0.7H
(D) 0.611
Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is__________________?
(A) slightly less
(B) slightly more
(C) nearly half
(D) equal
Coefficient of velocity of venturimeter_________________?
(A) is independent of Reynolds number
(B) decreases with higher Reynolds number
(C) is equal to the coefficient of discharge of venturimeter
(D) none of the above
The discharge through a V- notch varies as______________?
(A) H1/2
(B) H3’2
(C) H5/2
(D) H5’4 where H is head
Size of a venturimeter is specified by________________?
(A) pipe diameter
(B) throat diameter
(C) angle of diverging section
(D) both pipe diameter as well as throat diameter
Which of the following is used to measure the discharge ?
(A) current meter
(B) venturimeter
(C) pitot tube
(D) hotwire anemometer