யு ய்‌
D:-"H (Ly=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 7

10 + 0/00 “-ھ
2+ '(0(/)20
4+ (0(/)20) :6
5+ (0(/)20) -:0
‎Correct Answer:- Option-D‏
‎Question30:-What is the maximum efficiency of a jet striking a single plate moving in the direction of jet is‏
!)7( -&
')69/27(-:8
‎ய‏
‏"0:827
‎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)"‏
‎(4१ 5)/{100))`‏ ` 0.0036 + 0.30-:8
)5)/(100)7(2_((` 0.0431-:0
)11_5/100( 0.04317-:
‎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 7

&:- ` (97.7111))/04)`

B:-*(97.7Hm)/(sqrt(N})"

C:-*(97.7sqr{(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
q *->" Discharge from valve box to delivery tank
‏با‎ * -<* 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
ക്ര
8:- (0१) १07
ലു
ப ஸு
Correct Answer:- Option-D

Question35:-A hemispherical shape of diameter 1.5 m 5 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 7

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”
B:-"muj/sinalpha’
C:-*'mu’ sin*alpha
‏ہَء "0ہ ٭-:50‎ ۰3”
Correct Answer:- Option-B