The actual work accomplished in a circuit is a result of the ____ available at the two ends of a conductor.
A. potential
B. difference of potential
C. electromotive force
D. voltage
Answer: B
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Given: A circuit has an rms voltage of 120VAC. What is the peak-to-peak voltage?
a. 240V b. 270V c. 340V d. 424V
Answer the following statement(s) true (T) or false (F)
1. A DC motor is reversed by reversing the shunt field current. 2. In a DC reversing motor, the forward and reverse buttons are mechanically interlocked so that it is not possible to operate these buttons at the same time. 3. In a CEMF controller, braking action increases as the armature speed decreases. 4. When using the CEMF controller and dynamic braking, a field discharge resistor must be added. 5. A field discharge resistor is a thyristor-type device that conducts when the voltage across it is high enough, but has a high resistance to normal line voltage.
With a minimum of _____, a driver can do much to stay healthy and feel good while on the road.
A. 15 minutes of exercise per day B. 30 minutes of exercise per day C. 45 minutes of exercise every other day D. 60 minutes of exercise every week
The general relationship between stress and performance is that
a. as stress increases, performance will decrease. b. as performance increases, so does stress. c. as stress increases, performance will increase for a time. d. as stress increases, job satisfaction will decrease. e. as stress increases, job satisfaction will increase up to an optimal level.