AC Theory Level 1 Detailed Exam
Study Questions with Correct Answers
| Expert Graded A+
1. Magnetic field - ANSWER Whenever current flows through a conductor, a
is created around the conductor
2. Lenz's Law - ANSWER Law states that an induced voltage or current
opposes the motion that causes the induced voltage or current. The polarity
of these values are 180° out of phase from the applied voltage and current
3. 180 degrees - ANSWER Counter Electromotive Force is sometimes called
back EMF, and CEMF is ? out-of-phase with the applied voltage.
4. EMF voltage - ANSWER The applied voltage is often called
5. R•C - ANSWER What is the equation used to find the time constant for a
resistive capacitive circuit if the resistor and capacitive values are given?
6. Alternating (blocked) - ANSWER A capacitor effectively passes current
7. The total capacitance of parallel capacitors is calculated the same way as the
total resistance of series resistances. - ANSWER True or false
8. Oil filled - ANSWER capacitors are often used in motor circuits.
, 9. Polarized - ANSWER Electrolytic capacitors are type
10.Store - ANSWER Capacitance is the ability of a component to. an electrical
charge.
11.Voltage - ANSWER Capacitors are devices that appear to oppose a change
in
12.Leads - ANSWER In a purely capacitive circuit, the current. the applied
voltage by 90-degrees
13.Non-polarized - ANSWER capacitors can be used in either AC or DC
circuits.
14.Polarized - ANSWER capacitors are used in DC circuits only.
15.Reversing the polarity of a polarized capacitor should never be done. Doing
so can damage the capacitor. - ANSWER True or false
16.Area, distance, direction of plates - ANSWER List three factor that affect
the amount of capacitance a capacitor will have
17.Series - ANSWER The total capacitance of ___ capacitors is calculated the
same way as the total resistance of parallel resistors.
18.Ohms - ANSWER The unit of measure for capacitive reactance is the
Study Questions with Correct Answers
| Expert Graded A+
1. Magnetic field - ANSWER Whenever current flows through a conductor, a
is created around the conductor
2. Lenz's Law - ANSWER Law states that an induced voltage or current
opposes the motion that causes the induced voltage or current. The polarity
of these values are 180° out of phase from the applied voltage and current
3. 180 degrees - ANSWER Counter Electromotive Force is sometimes called
back EMF, and CEMF is ? out-of-phase with the applied voltage.
4. EMF voltage - ANSWER The applied voltage is often called
5. R•C - ANSWER What is the equation used to find the time constant for a
resistive capacitive circuit if the resistor and capacitive values are given?
6. Alternating (blocked) - ANSWER A capacitor effectively passes current
7. The total capacitance of parallel capacitors is calculated the same way as the
total resistance of series resistances. - ANSWER True or false
8. Oil filled - ANSWER capacitors are often used in motor circuits.
, 9. Polarized - ANSWER Electrolytic capacitors are type
10.Store - ANSWER Capacitance is the ability of a component to. an electrical
charge.
11.Voltage - ANSWER Capacitors are devices that appear to oppose a change
in
12.Leads - ANSWER In a purely capacitive circuit, the current. the applied
voltage by 90-degrees
13.Non-polarized - ANSWER capacitors can be used in either AC or DC
circuits.
14.Polarized - ANSWER capacitors are used in DC circuits only.
15.Reversing the polarity of a polarized capacitor should never be done. Doing
so can damage the capacitor. - ANSWER True or false
16.Area, distance, direction of plates - ANSWER List three factor that affect
the amount of capacitance a capacitor will have
17.Series - ANSWER The total capacitance of ___ capacitors is calculated the
same way as the total resistance of parallel resistors.
18.Ohms - ANSWER The unit of measure for capacitive reactance is the
