AC/DC Electrical Circuits 1 part 2

Capacitance is measured in _____

• A) Farads

• B) Henrys

• C) Ohms

• D). Volts

The energy stored by a capacitor is called a(n) _____

• A) Induced voltage

• B) Electrostatic charge

• C) Voltage spike

• D) All of the above

• E) None of the above

Which of the following is a type of capacitor

• A) Electrolytic

• B) Nonpolarized

• C) Variable

• D) All of the above

• E) None of the above

In a DC circuit, capacitors _____

• A) Charge to a voltage equal to the source voltage

• B) Continue to charge until the source is completely drained

• C) Act like a short until it is fully charged

• D) None of the above

The apparent resistance to AC by a capacitor is called _____

• A) Frequency displacement

• B) Capacitive reactance

• C) Passive capacitance

• D. Filtering

Which of the following is the total series capacitive reactance formula

• A) XCT=XC1 x XC2 x XC3...

• B) XCT=XC1 - XC2 - XC3...

• C) XCT= XC1 + XC2 + XC3...

• D) XCT=1/[(1/XC1) + (1/XC2) + (1/XC3)...]

The formula for calculating total parallel capacitance is _____

• A) CT = C1 + C2 + C3...

• B) (1/CT) = (1/C1) + (1/C2) + (1/C3)

• C) CT = C1 x C2 x C3...

• D) CT = C1 - C2 - C3...

A common inductor found in fluorescent light fixtures is a _____

• A) Starter

• B) Cathode

• C) Ballast

• D) Switcher

A time-delay relay that uses an RC timing circuit is called a(n) _____

• A) Solid-state, time-delay relay

• B) Adjustable relay

• C) Dashpot time-delay relay

• D) Motor-driven, time-delay relay

In a power supply that converts an AC input to generate a DC output, a capacitor is commonly used to _____

• A) Block the current flow

• B) Increase the current flow

• C) Filter the rectifier's pulsating DC output

• D. Decrease the voltage