படட ‏۵۰ء“‎
‎D: HL) =H
Correct Answer:- Option-C

Question29:-What will be the number of buckets on the periphery of Pelton Wheel Runner, If 'D' is the diameter of wheel and
'd' is the diameter of the jet ?
A: 20/20 + 10
(D)(2d)* +12
(0)(20) +14
:- (0)20) +15
Correct Answer:- Option-D
Question30:-What is the maximum efficiency of a jet striking a single plate moving in the direction of jet is
“(4/27)'
(6)/(27)°
(1/2:
6-7”
Correct Answer:- Option-D
Question31:-For Francis Turbine Thoma's critical cavitation factor *sigma_(C)* can be related to specific speed as
A:-0.30 + 0.0036 *((N_S)/(100))*(2.73)*
B:-0.30 + 0.0036 *((N_S)/(100))*
C:-0.0431 *((N_S)/(100))*(2)°
D:-0.0431*(N_S//100)*
Correct Answer:- Option-C
Question32:-What is the least diameter of impeller in a centrifugal pump to commense the flow, where Hm is the
manometric head N is the speed of impeller ?
*(97.7Hm)/(N)°
(97.7Hm)/(sqrt(N))*
(97.7sqrt(Hm))/(N)~
D:-* (97.7sqrt(N))/(Hm)>
Correct Answer:- Option-C
Question33:-When an air vessel is fitted in a double acting Reciprocating pump, percentage workdoneper stroke saved
against friction is
A:-84.8%
B:-39.2%
C:-46.4%
D:-76.4%
Correct Answer:- Option-B
Question34:-Q *->* Discharge from supply tank to valve box
‏'<۔' و‎ Discharge from valve box to delivery tank
H *->* Height of water in discharge tank above valve box
h *->* Height of water in supply tank above valve box
Then D' Aubuisson's efficiency of a hydraulic Ram is

മര
8:-(04)/6
೦-0೧-೪)
0:-` 01/00)

Correct Answer:- Option-D
Question35:-A hemispherical shape of diameter 1.5 m is provided in the bottom of a tank. If the depth of water above the
horizontal floor of tank is 5 m. What is the magnitude of resultant force on hemisphere ?

A:-78 KN

B:-74 KN

C:-76 KN

D:-75 KN

Correct Answer:- Option-A
Question36:-If *mu* is the actual coeficient of friction in a belt moving in a grooved pulley, the groove angle being '2°alpha*',
the virtual coefficient of friction will be

A:-mu//cosalpha*

5: mu//sinalpha*

C:-mu’ sin’ alpha* * ~

D:-* mu* cos*alpha*

Correct Answer:- Option-B