Reference no: EM132587705
Question 1 - Water is drawn from a reservoir at the rate of 0.13 m3/sec, the water level in the reservoir is 240 m above datum. The outlet of the pipeline is at datum level and is fitted with a nozzle to produce a high-speed jet to drive a turbine of the Pelton wheel type. If the velocity of the is 66 m/sec, calculate
a) The power of the jet,
b) The power supplied from the reservoir,
c) The head used to overcome losses,
d) The efficiency of the pipeline and nozzle in transmitting power.
Question 2 - Determine the anchoring force required to hold in place a conical nozzle attached to the end of a laboratory sin faucet when the water flow rate is 0.6 liter/s. The nozzle mass is 0.1 kg. The nozzle inlet and exit diameters are 16 mm and 5mm, respectively. The nozzle axis is vertical and the axial distance between section (1) and (2) is 30 mm. The pressure at section (1) is 464 kPa to hold the vane stationary.
Neglect gravity and viscous effects.
Question 3 - The small fan shown in the figure below moves air at a mass flow rate of 0.1 kg/min. Upstream of the fan, the pipe diameter is 60 mm, and the kinetic energy coefficient, α1, is equal to 2.0. Downstream of the fan, the pipe diameter is 30 mm and the kinetic energy coefficient, α2, is equal to 1.08. If the rise in static pressure across the fan is 0.1 kPa and the fan motor draws 0.14 W, compare the value of loss calculated:
(a) Assuming uniform velocity distributions.
(b) Considering actual velocity distribution.
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