1 (8001): The working voltage of a capacitor in an ac circuit should be
A: equal to the highest applied voltage.
B: at least 20 percent greater than the highest applied voltage.
C: at least 50 percent greater than the highest applied voltage.
2 (8002): The term that describes the combined resistive forces in an ac circuit is
A: resistance.
B: reactance.
C: impedance.
3 (8003): The basis for transformer operation in the use of alternating current is mutual
A: inductance.
B: capacitance.
C: reactance.
4 (8004): The opposition offered by a coil to the flow of alternating current is called (disregard resistance)
A: impedance.
B: reluctance.
C: inductive reactance.
5 (8005): An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?
A: Inductance and frequency.
B: Resistance and voltage.
C: Resistance and capacitive reactance.
6 (8006): (Refer to Figure 1.) When different rated capacitors are connected in series in a circuit, the total capacitance is
A: less than the capacitance of the lowest rated capacitor.
B: greater than the capacitance of the highest rated capacitor.
C: equal to the sum of all the capacitances.
7 (8007): In an ac circuit, the effective voltage is
A: equal to the maximum instantaneous voltage.
B: greater than the maximum instantaneous voltage.
C: less than the maximum instantaneous voltage.
8 (8008): The amount of electricity a capacitor can store is directly proportional to the
A: distance between the plates and inversely proportional to the plate area.
B: plate area and is not affected by the distance between the plates.
C: plate area and inversely proportional to the distance between the plates.
9 (8010): Unless otherwise specified, any values given for current or voltage in an ac circuit are assumed to be
A: instantaneous values.
B: effective values.
C: maximum values.
10 (8011): When different rated capacitors are connected in parallel in a circuit, the total capacitance is|(Note: C(T) = C(1) + C(2) + C(3) . . .)
A: less than the capacitance of the lowest rated capacitor.
B: equal to the capacitance of the highest rated capacitor.
C: equal to the sum of all the capacitances.
11 (8012): When inductors are connected in series in a circuit, the total inductance is (where the magnetic fields of each inductor do not affect the others)|(Note: L(T) = L(1) + L(2) + L(3) . . .)
A: less than the inductance of the lowest rated inductor.
B: equal to the inductance of the highest rated inductor.
C: equal to the sum of the individual inductances.
12 (8013): (Refer to Figure 3.) When more than two inductors of different inductances are connected in parallel in a circuit, the total inductance is
A: less than the inductance of the lowest rated inductor.
B: equal to the inductance of the highest rated inductor.
C: equal to the sum of the individual inductances.
13 (8039): Which statement is correct when made in reference to a parallel circuit?
A: The current is equal in all portions of the circuit.
B: The total current is equal to the sum of the currents through the individual branches of the circuit.
C: The current in amperes can be found by dividing the EMF in volts by the sum of the resistors in ohms.
14 (8041): Transfer of electrical energy from one conductor to another without the aid of electrical connections
A: is called induction.
B: is called airgap transfer.
C: will cause excessive arcing and heat, and as a result is impractical.
15 (8051): Which of these will cause the resistance of a conductor to decrease?
A: Decrease the length or the cross-sectional area.
B: Decrease the length or increase the cross-sectional area.
C: Increase the length or decrease the cross-sectional area.
16 (8052): Through which material will magnetic lines of force pass the most readily?
A: Copper.
B: Iron.
C: Aluminum.
17 (8054): Which is correct concerning a parallel circuit?
A: Total resistance will be smaller than the smallest resistor.
B: Total resistance will decrease when one of the resistances is removed.
C: Total voltage drop is the same as the total resistance.
18 (8055): The voltage drop in a conductor of known resistance is dependent on
A: the voltage of the circuit.
B: only the resistance of the conductor and does not change with a change in either voltage or amperage.
C: the amperage of the circuit.
19 (8079): Forward biasing of a solid state device will cause the device to
A: conduct via zener breakdown.
B: conduct.
C: turn off.
20 (8088): A fully charged lead-acid battery will not freeze until extremely low temperatures are reached because
A: the acid is in the plates, thereby increasing the specific gravity of the solution.
B: most of the acid is in the solution.
C: increased internal resistance generates sufficient heat to prevent freezing.
21 (8089): What determines the amount of current which will flow through a battery while it is