The __________ feedback loop provides the most accurate signal for a DC drive.

A. internal
B. external


Answer: B

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Answer the following statement(s) true (T) or false (F)

1. The secondary is the winding that is connected to the power source and brings power to the transformer. 2. The transformer operates by a temperature gradient. 3. Control transformers are used to change the value of line voltage to the value needed for the control circuit. 4. Most industrial and commercial air conditioning systems operate on 240 or 480 volts. 5. An ohmmeter is generally used to test the windings of the transformer.

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Wool cannot be worn in the summer because it does not absorb moisture

Indicate whether the statement is true or false

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Resistors with a tolerance rating of ±2%, ±5%, and ±10% have ____ color bands.

a. two b. three c. four d. five

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What is the possible error for a gauge that has a 1% of full scale accuracy if the gauge reads up to 300 psig?

A) Plus or minus 6 psi B) Plus or minus 1 psi C) Plus or minus 3 psi D) Plus or minus 2 psi

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