Pb # 1: An impulse turbine with a pitch diameter of 4 ft and a bucket angle of 160° is rotating at 500+(Reg.No/100) rpm. The nozzle produces a jet with a velocity of 200+(Reg.No/100) ft/s and diameter of 4 in. Find (a) the force of the buckets, (b) the torque on the runner, (c) the horsepower transferred to the runner, and (d) the efficiency n of the turbine under these conditions of operation. Energy head entering buckets is V,/2g, where Vj is the jet velocity. Assume the head loss through the nozzle can be expressed as 0.05V/2g and assume the relative velocity to the buckets does not change (i.e. assume v, = v2). Neglect bearing friction and windage.

Pb # 1: An impulse turbine with a pitch diameter of 4 ft and a bucket angle of 160° is rotating at 500+(Reg.No/100) rpm. The nozzle produces a jet with a velocity of 200+(Reg.No/100) ft/s and diameter of 4 in. Find (a) the force of the buckets, (b) the torque on the runner, (c) the horsepower transferred to the runner, and (d) the efficiency n of the turbine under these conditions of operation. Energy head entering buckets is V,/2g, where Vj is the jet velocity. Assume the head loss through the nozzle can be expressed as 0.05V/2g and assume the relative velocity to the buckets does not change (i.e. assume v, = v2). Neglect bearing friction and windage.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

Fluid Mechanics-2

Reg.no: 5262

Pb # 1: An impulse turbine with a pitch diameter of 4 ft and a bucket angle of 160° is rotating
at 500+(Reg.No/100) rpm. The nozzle produces a jet with a velocity of
200+(Reg.No/100) ft/s and diameter of 4 in. Find (a) the force of the buckets, (b) the
torque on the runner, (c) the horsepower transferred to the runner, and (d) the
efficiency n of the turbine under these conditions of operation. Energy head entering
buckets is V,/2g, where Vj is the jet velocity. Assume the head loss through the nozzle
can be expressed as 0.05V/2g and assume the relative velocity to the buckets does
not change (i.e. assume v, = v2). Neglect bearing friction and windage.

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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