# Construction Electrician - Advanced

## Quiz Questions

 1. The following figure represents ______________.? Period of Cosine wave Period of Sine wave Period of Tan wave None of the above 2. The effective value (I eff) of any sine wave of current is always ___________ times the maximum value (I max). 0.707 1.414 3.343 4.234 3. Basic unit of inductance is ___________ .? Amperes Coulombs Henry Ohm 4. A capacitor is a physical device consisting of two pieces of conducting material separated by a dielectric. Dielectric is an ____________.? Insulator Conductor Both A & B 5. What is the Power factor for the series circuit shown below, given True power = 1,500V and Apparent power = 2,500 VA. 0.2 0.3 0.6 0.9 6. If Resistive current I = 5 A and Resistance is 60 Ohms, what is the true power in a series circuit.? 500 Watts 1000 Watts 1500 Watts 2000 Watts 7. The following figure represents ________________.? Series Circuit Parallel Circuit Series – Parallel Circuit None of the above 8. When reactance and resistance are combined, the value of the impedance will be greater than either. True False 9. A _______________ capacitor will store one coulomb of charge (energy) when a potential of one volt is applied across the capacitor plates. one-farad two-farad three-farad four-farad 10. With an ac voltage, in the first quarter-cycle (0° to 90°) the applied voltage is_________________ . Continually increasing Continually decreasing remains constant 11. The opposing force which an inductor presents to the flow of alternating current cannot be called resistance, since it is not the result of friction within a conductor. True False 12. The formula for average voltage is ______________ where E avg is the average voltage of one alternation, and E max is the maximum or peak voltage. Eavg = 0.136 X E max Eavg = 0.236 X E max Eavg = 0.536 X E max Eavg = 0.636 X E max 13. The number of complete cycles of alternating current or voltage completed each second is referred to as the_______________.? Frequency Resistance Capacitance 14. Ohm’s law cannot be applied to alternating-current circuits since it does not consider the reactance which is always present in such circuits. True False 15. If Impedance is 5 Ohms and Resistance 4 Ohms what is the power factor ____________.? 0.2 0.4 0.6 0.8