• #### 1.  An iron core

• increases the value of inductance
• decreases the value of inductance

• starter
• cathode
• ballast
• switcher

• Ohms
• henrys
• RPMs
• #### 4.  Which of the following is the total series capacitive reactance formula?

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

• in watts
• in henries

• capacitance
• Inductance
• A time delay
• A relay
• #### 7.  A time-delay relay that uses an RC timing circuit is called a(n)_________

• solid-state, time-delay relay
• dashpot time-delay relay
• motor-driven, time-delay relay
• #### 8.  The faster the current changes

• the lower the induced voltage
• the higher the induced voltage
• #### 9.  Which of the following is a type of capacitor?

• Electrolytic
• Nonpolarized
• Variable
• All of the above
• None of the above
• #### 10.  The concept of a magnetic field being formed around a conductor when current flows through it is called __________.

• capacitance
• electromagnetism
• flux
• All of the above
• None of the above
• #### 11.  Elements with a definite value of inductance

• are called inductors
• are called coils
• are called sources

• Solenoid
• Relay
• Resistor
• Motor
• #### 13.  Induction by a varying current

• results from the change in current
• results from the change in the current value
• #### 14.  One of the effects a capacitor has in a DC circuit is that it will __________.

• charge to a voltage equal to the source voltage
• continue to charge until the source is completely drained
• act like an open until it is fully charged
• All of the above
• None of the above
• #### 15.  Which of the following is the correct formula for calculating total parallel inductive reactance in a parallel circuit?

• XLT = XL1 + XL2 + XL3 ...
• XLT = XL1 * XL2 * XL3...
• XLT = 1/[(1/XL1) + (1/XL2) + (1/XL3) ... ]
• XLT = (1/XL1) + (1/XL2) + (1/XL3) ...
• #### 16.  The resistance provided by an inductor in an AC circuit is called __________.

• induced resistance
• inductive reactance
• electromotive force
• All of the above
• None of the above
• #### 17.  The formula for calculating total parallel capacitance is __________

• CT= C1 + C2 + C3...
• (1/CT) = (1/C1) + (I/C2) + (1/C3)
• CT= C1 * C2 * C3...
• CT = C1 - C2 - C3 ....
• #### 18.  Which of the following is the correct formula for calculating total series inductance?

• LT = L1 + L2 + L3...
• LT = L1 * L2 * L3...
• LT = (1/L1) + (1/L2) + (1/L3) ..
• All of the above
• None of the above
• #### 19.  Any conductor can provide

• electric power
• induced voltage

• henrys
• Ohms
• Volts

• inductor
• capacitor
• transducer
• oscillator
• #### 22.  The inductance of a coil depends upon

• its size
• its core
• its number of turns
• #### 23.  Any conductor has

• some definite value of resistance
• some definite value of inductance
• #### 24.  In an electric DC power supply, a capacitor is commonly used to__________

• block the current flow
• increase the current flow
• filter out the unwanted AC voltage
• decrease the voltage
• #### 25.  The energy stored by a capacitor is called a(n) __________.

• induced voltage
• electrostatic charge
• voltage spike
• All of the above
• None of the above
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