Answer the following statement(s) true (T) or false (F)
1. Any circuit with three 6 ? resistors and one 2 ? resistor will have a total resistance 20 ?
2. The resistance of any conductor is directly proportional to its length.
3. A 250,000 circular mil conductor is designated 25 kcmil.
4. The resistance of a circuit or conductor is usually constant and does not depend upon either current or voltage.
1. False
2. True
3. False
4. True
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The performance of a proportional control system can be significantly improved by adding in a(n) ____________________ term to improve the dynamic response and reduce overshoot.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements about how electrical current flow is induced in an alternator is correct?
A. rotating magnetic field induces a voltage into stationary windings B. stationary magnetic field induces voltage within a rotor C. current flow from the alternator is sourced from the battery banks D. current flow from the alternator is sourced from the voltage regulator
SERCOS is ________
A) A low-cost communications single cable network with input and output devices with an embedded microprocessor for network communications B) A digital motion control network that interfaces the motion control module in the PLC with the servo motor drive through a fiber optic cable C) An open network standard that uses the producer/consumer network model to efficiently exchange time-critical application information in control systems D) An open industrial networking standard that takes advantage of commercial off-the-shelf Ethernet hardware
Hard spots in the drum care caused by over-heating the brakes.
Answer the following statement true (T) or false (F)