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5-2 AC THEORY FINAL PRACTICE TEST QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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5-2 AC THEORY FINAL PRACTICE TEST QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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5-2 AC THEORY FINAL PRACTICE TESTQUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
To charge a capacitor, you connect it to a(n) ----- power. - ANSWER DC
The volts-amps reactive (VARS) is found by the circuit current times the voltage across the ------
components. - ANSWER Inductive, Capacitive, Reactive, (All of the above)
The -----is a type of instrument that is used to determine the phase relationship between two separate
generator voltages. - ANSWER Synchoroscope
When resistance and capacitance are connected in----- the voltage across all the devices will be in phase
and will have the same value - ANSWER parallel
The total opposition to current flow in the circuit containing parallel inductors is always ----the
opposition caused by the lowest-value coil or inductor. - ANSWER less than
The rate of change of----- per second of the changing current will determine the amount of CEMF. -
ANSWER amps
The original capacitor was known as----jar - ANSWER Leyden
When a voltage is induced into a conductor as it is passed through a magnetic field, the effect is called---
induction. - ANSWER electromagnetic
You will find that if the two coils are aidng each other, the magnetic field becomes stronger in the total---
- increases. - ANSWER Lt ( Inductance)
The voltage reference is the simplest choice for analyzing-----circuits - ANSWER parallel
,The ----value is measured from zero to the highest value obtained in either the positive or negative
direction. - ANSWER peak
This sine wave generation is called the --- effect on an LC tank circuit - ANSWER flywheel
Because inductance and inductive reactance are ---- ,the same rules that apply for inductors in parallel
are also used to determine inductive reactance in parallel. - ANSWER directly proportional
The items needed to generate voltage are a conductor, and magnetic field, and ----- between the
conductor and the magnetic field - ANSWER relative motion
Frequency has an effect on capacitive reactance because the capacitor charges and discharges ----- at
higher frequency. - ANSWER faster
True power is measured in ----- and it is represented or shown along the horizontal axis because it has a
zero degree angle. - ANSWER watts
The total resistance in a series circuit is found by ---- the values of the resistors in the circuit. - ANSWER
adding
Induced voltage produces a ---- - ANSWER current
The condition that exists when the setup of the generator results in the no-load voltage being greater
than the full-load voltage is known as ---- - ANSWER under compounding
The circuit may change from a leading to a lagging power factor depending on the changing values of
inductive and capacitive ---- in the circuit - ANSWER reactance
The main purpose of most transformers is to transfer energy while changing the ---- level of the circuit
between primary and secondary - ANSWER voltage
, the total --- is always calculated by adding the vectors or by using the Pythagorean theorem - ANSWER
impedance (Z)
Two coils need to be ---- each other in order for their fields to create a coefficient of coupling and affect
the mutual inductance - ANSWER parallel to
recharging of a battery is an example of ---- - ANSWER chemical action
the voltage in a coil induces into itself has caused by the characteristics of----- - ANSWER self inductance
assume a resistor has a value of 6 ohms, and it is connected to a 12-volt source. when the switch is
closed the current rises to---- - ANSWER 2 amps
resistance and capacitive reactance are 90 degrees out of phase with each other, and these form a right
triangle with the impedance, forming the--- - ANSWER hypotenuse
an electrical Transformer designed to have a higher voltage at the secondary output then it has a the
primary input is known as a ----Transformer - ANSWER step-up
atoms have three main parts:---- - ANSWER protons, neutrons, electrons
capacitance is measured in - ANSWER Farads (F)
since inductive reactance and capacitive reactance are ---degrees out of phase with each other, they
substract from each other in an AC circuit - ANSWER 180
when an AC circuit has the elements of resistance, inductance, and capacitive reactance connected in
parallel, the voltage drop across each branch is---- - ANSWER the same as it is in any parallel circuit
the formula used to determine the capacitance with the dielectric constant (k), the area of the plates
(a)(in square inches), and the distance between the plates (d) (in inches) is---- - ANSWER C=KA/d
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