Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 1 (Q.No. 13)
13.
A hydraulic turbine has a discharge of 5 m3/s, when operating under a head of 20 m with a speed of 500 rpm. If it is to operate under a head of 15 m, for the same discharge, the rotational speed in rpm will approximately be
Discussion:
13 comments Page 2 of 2.
Pravin Prakash Kadam said:
5 years ago
Thanks @Mohan.
Pratiksha said:
5 years ago
N1 * H2^(1/2) = N2*H1^(1/2).
500*(15)^(1/2) = N2*(20)^(1/2),
[500*(15)^(1/2)]/[20^(1/2)] = N2.
N2 = 433.01.
500*(15)^(1/2) = N2*(20)^(1/2),
[500*(15)^(1/2)]/[20^(1/2)] = N2.
N2 = 433.01.
(3)
Shoma barbhuiya said:
5 years ago
Specific speed of pump = 403rpm.
(1)
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