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Electrical Engineering: Fundamentals of AC Circuits - Test 3 Questions and Answers, Exams of Electrical and Electronics Engineering

Adler UniversityElectrical and Electronics Engineering

A comprehensive set of questions and answers covering fundamental concepts in ac circuits, including real, reactive, and apparent power, rl circuits, low-pass and high-pass filters, capacitors, inductance, and inductive reactance. It is a valuable resource for students studying electrical engineering or related fields.

Typology: Exams

2024/2025

Available from 02/11/2025

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ATT TEST 3 LATEST TEST 2025 | ALL QUESTIONS
AND CORRECT ANSWERS | ALREADY GRADED A+ |
NEWEST VERSION | VERIFIED ANSWERS
What is real power? ---------CORRECT ANSWER-----------------power
consumed by resistor (Pr = Vr x Ir)
What is reactive power? ---------CORRECT ANSWER-----------------power in
the inductor (PL = VL x IL)
What is apparent power? ---------CORRECT ANSWER-----------------combo
of real and reactive power (Pa = Va x It)
What is the resistance of a good inductor? ---------CORRECT ANSWER-----
------------Low (20-200 ohms)
In a RL series circuit, as phase angle approaches 0 degrees, the circuit is
mostly (resistive/inductive) ---------CORRECT ANSWER-----------------
Resistive
What two things are in phase across a resistor? ---------CORRECT
ANSWER-----------------current/voltage
What component is placed in series with input in a low pass RL filter? -------
--CORRECT ANSWER-----------------Inductor
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Partial preview of the text

Download Electrical Engineering: Fundamentals of AC Circuits - Test 3 Questions and Answers and more Exams Electrical and Electronics Engineering in PDF only on Docsity!

ATT TEST 3 LATEST TEST 2025 | ALL QUESTIONS

AND CORRECT ANSWERS | ALREADY GRADED A+ |

NEWEST VERSION | VERIFIED ANSWERS

What is real power? ---------CORRECT ANSWER-----------------power consumed by resistor (Pr = Vr x Ir) What is reactive power? ---------CORRECT ANSWER-----------------power in the inductor (PL = VL x IL) What is apparent power? ---------CORRECT ANSWER-----------------combo of real and reactive power (Pa = Va x It) What is the resistance of a good inductor? ---------CORRECT ANSWER----- ------------Low (20-200 ohms) In a RL series circuit, as phase angle approaches 0 degrees, the circuit is mostly (resistive/inductive) ---------CORRECT ANSWER----------------- Resistive What two things are in phase across a resistor? ---------CORRECT ANSWER-----------------current/voltage What component is placed in series with input in a low pass RL filter? ------- --CORRECT ANSWER-----------------Inductor

The output is taken across what component in low pass RL filter? --------- CORRECT ANSWER-----------------Resistor In a low pass RL filter, as frequency increases output voltage (increases/decreases) ---------CORRECT ANSWER-----------------Decreases Cutoff frequency produces _____% of the max voltage? ---------CORRECT ANSWER-----------------70.7% (0.707) What component is placed in series with input in a high pass RL filter? ------ ---CORRECT ANSWER-----------------Resistor Output voltage is taken across what component in a high pass RL filter? ---- -----CORRECT ANSWER-----------------Inductor When frequency increases in a high pass RL filter the output voltage (increases/decreases) ---------CORRECT ANSWER-----------------Increases In a low pass filter, frequencies ABOVE cutoff frequency are known as what ---------CORRECT ANSWER-----------------Stop band frequencies In high pass filters, frequencies BELOW cutoff frequency are known as what? ---------CORRECT ANSWER-----------------Stop band frequencies

Current leads voltage by how many degrees in capacitive circuit? --------- CORRECT ANSWER----------------- 90 What does ICE stand for ---------CORRECT ANSWER-----------------Current leads voltage in a capacitive circuit Open in RL parallel branch reads how many volts? ---------CORRECT ANSWER-----------------Applied voltage What is the frequency of a wave? ---------CORRECT ANSWER----------------- number of cycles per second What is frequency measured in? ---------CORRECT ANSWER----------------- Hertz 3 cycles per second equals how many hertz? ---------CORRECT ANSWER- ----------------3 Hz What is the period of a wave? ---------CORRECT ANSWER----------------- Time per cycle

What is wavelength? ---------CORRECT ANSWER-----------------the actual distance between beginning and end of one cycle (meters/centimeters) What is induction? ---------CORRECT ANSWER-----------------generation of AC current by changing a magnetic field (flux variation) Flux variation is (directly/indirectly) proportional to induction and current? --- ------CORRECT ANSWER-----------------directly What is needed to induce current? ---------CORRECT ANSWER--------------- --conductor, magnetic field, relative motion What is peak voltage? ---------CORRECT ANSWER-----------------highest positive or negative voltage obtained What is peak to peak voltage? ---------CORRECT ANSWER----------------- determined by doubling peak voltage, from highest positive point to lowest negative point What is average voltage? ---------CORRECT ANSWER----------------- Calculated using sum of all angles contained in 180 degrees (0.637 X peak V) What is RMS voltage? ---------CORRECT ANSWER-----------------most common method to describe voltage of sine wave (0.707 X peak V)

Multimeters measure what type of voltage? ---------CORRECT ANSWER---- -------------RMS Bandwidth is the highest _____ an oscilloscope can measure? --------- CORRECT ANSWER-----------------Frequency What is the point of probe compensation? ---------CORRECT ANSWER------ -----------eliminates distortion of input signal What type of square wave should be produced when doing probe compensation? ---------CORRECT ANSWER-----------------5 VPP 1kHZ What does a function generator do? ---------CORRECT ANSWER------------- ----Provides a known input signal so tech can test a circuit What does DC offset do? ---------CORRECT ANSWER-----------------Adds DC voltage to AC waveform What does the range control do (function generator)? ---------CORRECT ANSWER-----------------Sets coarse frequency What are four functions of frequency counter? ---------CORRECT ANSWER-----------------Frequency, period, totalize, check

How is a magnetic field created? ---------CORRECT ANSWER----------------- current flowing through conductor What are inductors? ---------CORRECT ANSWER-----------------component with the ability to concentrate a magnetic field (opposes changes in DC current) What happens to current when a magnetic field expands? --------- CORRECT ANSWER-----------------Increases Voltage induced in inductor is _____ to applied voltage and _____ current - --------CORRECT ANSWER-----------------Opposite/opposes What happens to induced voltage in an inductor with constant current? ----- ----CORRECT ANSWER-----------------No voltage is induced, must be increasing/decreasing What happens when AC voltage is applied to inductor ---------CORRECT ANSWER-----------------current is constantly changing and inductor constantly opposes current What happens once max current is reached in inductor ---------CORRECT ANSWER-----------------inductor no longer opposes current and acts like a short

What is inductive reactance measured in? ---------CORRECT ANSWER-----

  • -----------Ohms Voltage leads current by how many degrees in inductive circuit? --------- CORRECT ANSWER----------------- 90 What does ELI stand for? ---------CORRECT ANSWER-----------------Voltage leads current in inductive circuit What is impedance (Z) ---------CORRECT ANSWER-----------------combined opposition to current flow from resistor and inductor What replaces R in a RL circuit? ---------CORRECT ANSWER----------------- Z