Module 7

Question 1

Farads are converter to Microfarads (uf) by multiplying Farads by?

Answer 1

multiplying Farads by 10 to the 6th power.

Question 2

Farads are converted to Picofarads (pF) by?

Answer 2

multiplying Farads by 10 to the 12th power

Question 3

When handling a high voltage capacitor in an electrical circuit, be sure it is?

Answer 3

fully discharged before removing it from the circuit

Question 4

Capacitors are sometimes used in DC circuits to?

Answer 4

smooth out slight pulsations in current or voltage.

Question 5

The working voltage of a capacitor in an AC circuit should be?

Answer 5

rated at least 50% higher than the highest applied voltage.

Question 6

The amount of electricity a capacitor can store is directly proportional to the:

Answer 6

plate area and inversely proportional to the distance between the plates.

Question 7

When differently rated capacitors are connection in series in a circuit. THe total capacitance is?

Answer 7

less than the capacitance of the lowest rated capacitor

Question 8

The equation for figuring out total capacitance of a series of capacitors is?

Answer 8

1/((1/a)+(1/b))

Question 9

`The total capacitance of a certain )Series) circuit containing three capacitors with capacitances of .02uF, .05uF and .10uF respectively is?

Answer 9

.0124uF

Question 10

The total capacitance of a circuit containing three capacitors in parallel with capacitances of .02uF, .05uF and .10uF respectively is?

Answer 10

.170uF

Question 11

When differently rated capacitors are connected in parallel in a circuit, the total capacitance is?

Answer 11

equal to the sum of all capacitances

Question 12

The capacitance of a certain circuit containing three capacitors with capacitances of .25uF, .03uF and .12uF respectively is?

Answer 12

.4uF

Question 13

Which effect (Magnetic, Thermal, and/or static energy) does not apply to the movement of electrons flowing through a conductor?

Answer 13

static energy

Question 14

The transfer of electric energy from one circuit to another without the aid of electrical connections is called?

Answer 14

induction

Question 15

Why are the iron cores of most induction cores laminated?

Answer 15

to prevent eddy currents

Question 16

When inductors in series in a circuit, the total inductance is (where the magnetic fields do not effect each other)

Answer 16

equal to the sum of the individual inductances

Question 17

When more than two inductors of different inductances are connected in parallel in a circuit the total inductance is?

Answer 17

less than the inductance of the lowest rated inductor

Question 18

`The opposition to the flow of AC produced by a magnetic field with generated back voltage (EMF) is called?

Answer 18

inductive reactance

Question 19

The opposition offered by a coil to the flow of alternating current is called?

Answer 19

inductive reactance

Question 20

An increase of (inductance, frequency, resistance, voltage, capacitive reactance factors) will cause an increase in the inductive reactance of a circuit?

Answer 20

inductance and frequency