1. The co-efficient of discharge is the ratio between actual discharge and …………………. discharge.
(A) Theoretical
(B) Minimum
(C) Maximum
(D) All
2. Average value of co-efficient of discharge of flowing liquid through orifice is taken as
(A) 0.62
(B) 0.97
(C) 0.67
(D) 0.57
3. The co-efficient of velocity is determined experimentally by using the relation:
(A) Cv = x / √4yh
(B) Cv = y² / √4xh
(C) Cv = y / √4xh
(D) Cv = x² / √4yh
4. An orifice is said to be small if available head of water is more than at least ……………….. times its height.
(A) 3
(B) 5
(C) 8
(D) 10
5. A short pipe fitted to an orifice to improve its discharge co-efficient is termed as
(A) Venacontracta
(B) Mouth piece
(C) Borden Tube
(D) Niple
6. Length of mouth piece should not be less than ………………………….. times its diameter.
(A) 2
(B) 3
(C) 4
(D) 5
7. The continuous stream of a liquid that comes out from an orifice is termed as
(A) Venacontracta
(B) Jet
(C) Mouth piece
(D) Nappe
8. Ratio between the areas of venacontracta and that of the orifice is termed as co-efficient of
(A) Energy
(B) Velocity
(C) Discharge
(D) Contraction
9. Theoretical velocity of the jet at venacontracta is determined by
(A) √mgh
(B) √2gh
(C) √Wgh
(D) √gh
10. Minimum section of the jet of water is termed as
(A) Orifice
(B) Venacontracta
(C) Mouth piece
(D) Notch