For most AC circuits, the product of voltage and current must be multiplied by a(n) ____________________ to determine the true power.
Fill in the blank(s) with the appropriate word(s).
power factor
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What did early commercial and industrial control systems use to maintain the temperature in a structure, zone, or room?
What will be an ideal response?
A three-phase, 480 V, six-pole, 60 Hz, induction motor is driving a constant torque load of 80 Nm. The parameters of the motor are:
a. Calculate the magnitude of the injected voltage that would reduce the motor
speed to 800 rpm.
b. Calculate the power received by the injected voltage source.
c. Compute the starting current and the starting torque with the injected voltage.
A tool used for safe, flameless soldering of pipe is a
A. hand torch B. special purpose assembly tool C. soldering gun D. plasma cutter
What is installed in a piping system to catch any moisture that may exist because of condensation?
A. A drip B. A collector C. A dryer D. A condenser