Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 37, Problem 6RQ
To determine
The full load running current of the motor and the minimum size NEMA and IEC starters to be used.
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Just do Questions 7, 9, 11. Here are notes attached for reference. I prefer handwritten solutions. ONLY UPLOAD A SOLUTION IF YOU ARE SURE ABOUT THE ANSWER PLEASE.
Example
Consider the simplified model of an automobile shown in Figure, let the parameter have the
values m = 1500 kg, Ic = 2000 kg m2, k₁ = 36000 kg/m, k₁ = 40000 kg/m, a = 1.3 m
and b = 1.7 m, calculate the natural modes of the system and write the expression for the
response.
ט
0
Solution
T
Equilibrium position
6(1)
6.3 Contamination of vegetable oil
Vegetable oil is used in a food processing factory to prepare instant breadcrumbs. A stirred tank is used to hold the oil.
During operation of the breadcrumb process, oil is pumped from the tank at a rate of 4.8 1 h-¹. At 8 PM during the
night shift, the tank is mistakenly connected to a drum of cod liver oil, which is then pumped into the tank. The volume
of vegetable oil in the tank at 8 PM is 60 1.
(a) If the flow rate of cod liver oil into the tank is 7.5 1h-1 and the tank has a maximum capacity of 100 1, will the tank
overflow before the factory manager arrives at 9 AM? Assume that the density of both oils is the same.
(b) If cod liver oil is pumped into the tank at a rate of 4.8 1 h 1 instead of 7.5 1 h−1, what is the composition of oil in
the tank at midnight?
Chapter 37 Solutions
Understanding Motor Controls
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- 6.1 Dilution of sewage In a sewage treatment plant, a large concrete tank initially contains 440,000 litres of liquid and 10,000 kg of fine suspended solids. To flush this material out of the tank, water is pumped into the vessel at a rate of 40,000 1 h −1. Liquid containing solids leaves at the same rate. Estimate the concentration of suspended solids in the tank at the end of 5 h. State your assumptions.arrow_forward6.13 Heating glycerol solution An adiabatic stirred tank is used to heat 100 kg of a 45% glycerol solution in water. An electrical coil delivers 2.5 kW of power to the tank; 88% of the energy delivered by the coil goes into heating the vessel contents. The glycerol solution is initially at 15°C. (a) Write a differential equation for the energy balance. (b) Integrate the equation to obtain an expression for temperature as a function of time. (c) Assuming glycerol and water form an ideal solution, how long will the solution take to reach 90°C?arrow_forwardI don't see any other way to try to solve this problem can you please help me out with this?arrow_forward
- Homework#7arrow_forwardComputing Angles of Rotation and Angles of Tilt In each of the following problems, the axis of a hole is shown in a rectangular solid. In order to position the hole axis for drilling, the angle of rotation and the angle of tilt must be determined. Compute angles to the nearer minute in triangles with customary unit sides. Compute angles to the nearer hundredth degree in triangles with metric unit sides. a. Compute the angle of rotation, R. b. Compute the angle of tilt, T. 7. Given: H= 2.600 in. L = 2.400 in. a. W= 1.900 in. 8. Given: H= 55.00 mm b. Use this figure for #7 and #8. AXIS OF HOLE L 48.00 mm W= 30.00 mm H a. b. 9. Given: H = 4.750 in. L = 4.000 in. W= 3.750 in. a. 10. Given: H=42.00 mm b. L37.00 mm W = 32.00 mm a. b. 11. Given: H = 0.970 in. L = 0.860 in. W= 0.750 in. a. 12. Given: H= 22.00 mm L 18.00 mm = W = 15.00 mm a. b. Use this figure for #9 and #10. ZR AXIS OF HOLE Use this figure for #11 and #12. H b. L AXIS OF HOLE Tarrow_forwardThis is a tilt and rotation question. Here are notes attached for reference. I prefer handwritten solutions. ONLY UPLOAD A SOLUTION IF YOU ARE SURE ABOUT THE ANSWER PLEASE. I prefer handwritten solutions.arrow_forward
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