Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 50, Problem 4SQ
To determine
Explain the reason why the brake is not shown in the off position.
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TOPIC: Power Systems, Power Plants & IlluminationINSTRUCTIONS:- Answer in this format: Given, Illustration, Required Conversion, Solution, Final Answer.- Step-by-step solution, do not skip even simple calculations to avoid confusion.- If answered in written form, make sure it is readable.PROBLEM:In a group of 3 motors, one draws 15 A the other draws 40 A, and the third 52 A. What size of the conductor in terms of ampacity may be used for the feeder circuit?
107 A
120 A
134 A
160 A
CONTROL SYSTEMS
The question is in the attachment.
Completely solve and box/highlight/bold the final answers. WRITE LEGIBLY OR TYPEWRITE THE SOLUTIONS.
A 60 kW, 230 volts shunt generator has an equivalent armature resistance of 0.3 ohms, and shunt field resistance of 60 ohms.
Calculate:
a. armature current and induce voltage
b. generated power and total power loss
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Electric Motor Control
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- Two shunt generators and a battery are all connected to common bus-bars. The open circuit voltage of the battery is 247 V. The open circuit voltage, armature and field resistances of the generators are 250 v, 0.12 ohms and 100 ohms respectively. Both the generators supply the same current when the load on the bus-bars is 40 A. Calculate the internal resistance of the battery. ANSWER ASAP!arrow_forwardWrite a Step 7 program to control the following operations: 1. Place two parts in the feeding magazine (metallic and nonmetallic). 2. The ejector plate (Feed cyl) of the supply unit should push one part onto the conveyor. 4. The conveyor turns on and transfers the part past the sensor unit, where it is checked for type, to the stopper unit. 5. If the part is metallic, when it reaches the stopper, the conveyor stops, the z-axis cylinder goes down, the suction cup picks the part up, and then the z-axis retracts. The x-axis cylinder extends to drop the part onto the workpiece holding platform, while the cylinder is in the upper position (without lowering the z-axis). The x-axis retracts to the initial position.6. If the part is plastic, when it reaches the stopper, the conveyor stops, and the buzzer is turned on for a while then stops. 7. The process repeats. 8. Use the counters to count the different types of workpieces processed through the system.arrow_forwardCan you please explain why the frequency increased then the electrical length also increased. And why the length of the coaxial cable increase and electrical length also increase.arrow_forward
- 12.a. An electrical device would also fall into the classification of an electric(al)A. motor.B. load.C. component.D. fitting.12.b. A short circuit describes the condition where there's contact between theA. hot wire and the neutral wire.B. grounded conductor and the grounding wire.C. hot wire and the grounding wire.D. neutral wire and the grounded conductor.arrow_forwardBe fast , do roughly but correctarrow_forwardThe control circuit is used to detect and count the number of products being carried on an assembly line. When it counts five products, the circuit energizes a solenoid. The solenoid is energized for a period of two seconds and is then shunts off, causing it to retract? Note: Correct and detailed answer will be Upvoted else downvoted. Thank you!arrow_forward
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