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6. Which of the following determines total power in a series circuit?

a. Source voltage times the current
b. Total voltage applied to the circuit
c. Current flowing through a switch
d. Average of the wattage consumed by each resistor

7. The formula for calculating power factor in a three phase circuit is:

a. Watts*1.732*Volts
b. Watts/(Volts*Amps*1.732)
c. Volts/Amps*1.723
d. Watts/(Volts*Amps*1.414)

8. Concerning a three phase load, if KW is 170 and voltage is 480 at 240 amps, what is the power
factor?

a. 0.95 lagging
b. 0.95 leading
c. 0.85 leading
d. 0.85 lagging

9. Rectification involves:

a. Preventing Alternating Current from Alternating above and below 0 volts. Making Direct
b. Current Alternate above and below 0 volts.
c. Changing watts into Horse Power
d. Correcting Power Factor

10. If you think of a diode like a fluid system, its function is:

a. Allow current flow in two directions like a hydraulic motor
b. Prevent current flow in one direction similar to a check valve
c. Monitor current flow like a flow meter
d. Create flow like a hydraulic pump

11. Which of the following will NOT affect the resistance of a conductor?

a. Size
b. Length
c. Insulation
d. Temperature

12. Voltage in an electrical system is calculated by the formula:

a. E = P/I
b. E = I*R
c. E = √(P*R)
d. All of the above

EGSA Apprentice Certification Program Study Guide - Page 6