Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
4th Edition
ISBN: 9780357097755
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 37, Problem 8RQ
To determine
The size of the conductor, overload size, fuse size, NEMA and IEC starter sizes, the upper and lower range of the starting current for the motor.
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Determine the Mean Effective Pressure (MEP) in [bar] for a 4-cylinder, 2-Stroke engine with a bore of 85.7 mm, and a stroke of 65.8 mm, that produces 85 hP at 5000 rpm. (Hint: Be careful with units). Note: 1 hP = 0.7457 kW; 100 kPa = 1 bar
Ibraheem
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Q3: A boiler as shown in the figure below is producing 2 kg/s saturated steam at 240C. The water
enters the boiler at 24C. The boiler efficiency is 80%. Patm=1.05 bar .Determine: (10 Marks)
1- The inlet pressure of the turbine.
2- If a gauge pressure connected to the outlet pipe, what is the reading of this gauge?
3- Calculate the required diesel in [kg/s]. Assume the calorific value of the diesel is 45000 kJ/kgf
4- Calculate the equivalent evaporation of the boiler
5- Keeping the same inlet conditions and fuel consumption, determine the turbine efficiency if the
produced steam was saturated at 300C.
Steam Cut
Hot Gasses Out
Ts=240C
Boiler
FURNACE
A
Water In
C
24
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Head of Department
Ahmad. A. M. Alsak lani
Chapter 37 Solutions
Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
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