How much power is consumed by a circuit with a 120V source that draws 18A through a resistive load?
a. 6.7 watts
b. 6.7 ohms
c. 2,160 watts
d. 0.15 ohms
c
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Answer the following statement(s) true (T) or false (F)
1. Mechanical type brakes cannot hold a suspended load.
2. In the accompanying figure, the brake is applied automatically when the motor is not operating.
3. Dynamic braking for a DC motor is very effective, but the braking effect becomes weaker as the armature slows down.
4. Plugging is used with direct current motors more than with three phase squirrel cage motors.
5. One method of providing plugging control is with the use of an automatic timed circuit.
The specific volume of water at the critical point is 0.003155 m3/kg. The water is cooled at a constant specific volume from the critical point. Considering the data given here, determine the quality of the mixture as its temperature falls to 340°C, 300°C, 200°C, and 100°C:
Given: v = 0.003155 m3/kg
What will be an ideal response?
A lubrication system in a compressor:
a. provides circulation and cooling of sealing and lubrication oils b. minimizes total leakage c. increases the pressure on process gases d. transfers heat to the seals
The drug LSD is derived from plants infected with ____________________
Fill in the blank(s) with correct word