ECE REVIEWER FREE – ELECTRONICS ENGINEERING

Preparing for the Electronics Engineer Licensure Examination (ECE) can be a daunting task, but with the right tools, it becomes more manageable and even enjoyable. One such tool is the LOOKSFAM Board Exam Tool, designed to optimize your study process and help you succeed.

Electronics Engineering

Which of the following is the most popular waveform?
triangular
sinusoidal
sawtooth
square wave
Show Solution
Question:
Which of the following is the most popular waveform?
Answer:

sinusoidal

What does Transient Analysis study in circuits?
Studies DC behavior
Examines steady states
Analyzes transient states
Studies AC behavior
Show Solution
Question:
What does Transient Analysis study in circuits?
Answer:

Studies DC behavior

Explanation:

Transient analysis examines the behavior of circuits during the transition from one steady state to another.

A machine with field excitation by both shunt and series windings.
compound machine
universal machine
complex machine
shunt/series machine
Show Solution
Question:
A machine with field excitation by both shunt and series windings.
Answer:

compound machine

A microwave diode in which the carriers that transverse the drift region are generated by minority carrier injection from a forward-biased junction instead of being extracted from the plasma of an avalanche region.
BARITT diode
Esaki diode
IMPATT
TRAPATT
Show Solution
Question:
A microwave diode in which the carriers that transverse the drift region are generated by minority carrier injection from a forward-biased junction instead of being extracted from the plasma of an avalanche region.
Answer:

BARITT diode

In an inductive coil, the rate of rise of current is maximum
at half-power points
near the final maximum value of current
at mid-value of current
after one time constant
Show Solution
Question:
In an inductive coil, the rate of rise of current is maximum
Answer:

near the final maximum value of current

How many outputs does a full adder have?
4
2
8
1
Show Solution
Question:
How many outputs does a full adder have?
Answer:

2

A magnetic pole produces 5000 field lines. How much is the flux in Webers?
500 x 10^-6
500 x 10^-5
5 x 10^-6
50 x 10^-6
Show Solution
Question:
A magnetic pole produces 5000 field lines. How much is the flux in Webers?
Answer:

50 x 10^-6

Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying conductors can attract and repel each other just like magnets?
Andre Ampere
Luigi Galvani
Charles Coulomb
Hans Christian Oersted
Show Solution
Question:
Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying conductors can attract and repel each other just like magnets?
Answer:

Andre Ampere

The temperature-resistance coefficient of pure gold is
0.0038
0.0037
0.0039
0.0034
Show Solution
Question:
The temperature-resistance coefficient of pure gold is
Answer:

0.0034

What is the practical unit of electrical energy?
watt
megawatt-hour
kilowatt-hour
kilowatt-second
Show Solution
Question:
What is the practical unit of electrical energy?
Answer:

kilowatt-hour

This occurs when the result of an arithmetic operation is a more negative number than the output register can accommodate.
error
overflow
underflow
don't care
Show Solution
Question:
This occurs when the result of an arithmetic operation is a more negative number than the output register can accommodate.
Answer:

underflow

The _____ provides the visual display showing the form of the signal applied as a waveform on the front screen of a cathode ray oscilloscope.
computer
television
meter face
CRT
Show Solution
Question:
The _____ provides the visual display showing the form of the signal applied as a waveform on the front screen of a cathode ray oscilloscope.
Answer:

CRT

For a series circuit, the higher the quality factor
the broader the resonance curve
the narrower the passband
the greater the bandwidth
the wider the passband
Show Solution
Question:
For a series circuit, the higher the quality factor
Answer:

the narrower the passband

"In electricity, positive charge refers to ______"
Electrons"
"
Atoms"
"
Show Solution
Question:
"In electricity, positive charge refers to ______"
Answer:

Explanation:

Protons"

In IC op amps, one of the most important input characteristics is the _____ which is defined as the difference between the base currents.
total base currents
input offset current
all of the choices
input bias current
Show Solution
Question:
In IC op amps, one of the most important input characteristics is the _____ which is defined as the difference between the base currents.
Answer:

input offset current

Also called as the conventional amplifier.
common-collector circuit
common emitter circuit
emitter follower circuit
common base circuit
Show Solution
Question:
Also called as the conventional amplifier.
Answer:

common emitter circuit

The deciding factor in the selection of a dc motor for a particular application is its _____ characteristic.
torque-armature current
speed-torque
speed
speed-armature current
Show Solution
Question:
The deciding factor in the selection of a dc motor for a particular application is its _____ characteristic.
Answer:

speed-torque

What is the typical operating temperature of an oxide coated cathode?
750 degrees C
1000 degrees C
500 degrees C
1200 degrees C
Show Solution
Question:
What is the typical operating temperature of an oxide coated cathode?
Answer:

750 degrees C

Which of the following below is not a description of the two-stage amplifiers
the input resistance is equal to the input resistance of the first stage unless feedback is applied
the output resistance is equal to the output resistance of the first stage unless feedback is applied
its noise level is equal to the accumulated noise of the two stages, either by multiplying the noise voltage amplitudes together or by adding the noise decibel levels together
its output resistance is equal to the output resistance of the final stage unless feedback is applied
Show Solution
Question:
Which of the following below is not a description of the two-stage amplifiers
Answer:

the output resistance is equal to the output resistance of the first stage unless feedback is applied

Which of the following does not generally affect the value of a capacitor?
the dielectric material used
the thickness of the dielectric
the surface are of the plates
the voltage applied to the plate
Show Solution
Question:
Which of the following does not generally affect the value of a capacitor?
Answer:

the voltage applied to the plate

Plastic dual in line for insertion into sockets has a package suffix code of
both A and B
J
P
N
Show Solution
Question:
Plastic dual in line for insertion into sockets has a package suffix code of
Answer:

both A and B

Which of the following has the highest permeability?
permalloy
soft iron
steel
air
Show Solution
Question:
Which of the following has the highest permeability?
Answer:

permalloy

_____ uses a material catwhisker as its anode and is classified as a hot-carrier diode.
shockley diode
PIN
crystal diode
point-contact diode
Show Solution
Question:
_____ uses a material catwhisker as its anode and is classified as a hot-carrier diode.
Answer:

point-contact diode

The ionization potential in a gas diode depends upon
plate current
type and pressure of gas
size of the tube
cathode construction
Show Solution
Question:
The ionization potential in a gas diode depends upon
Answer:

type and pressure of gas

A magnitude comparator has 2^(2n) entries in the truth table where n =
number of comparator bits
number of inputs and outputs
number of outputs
number of inputs
Show Solution
Question:
A magnitude comparator has 2^(2n) entries in the truth table where n =
Answer:

number of comparator bits

A utility meter’s readout indicates.
Power
Energy
Current
Voltage
Show Solution
Question:
A utility meter’s readout indicates.
Answer:

Energy

Explanation:

The utility meter's readout indicates the consumption of electrical energy, usually measured in kilowatt-hours (kWh).

AT/m is a unit of
magnetic flux density
magnetizing force
reluctance
mmf
Show Solution
Question:
AT/m is a unit of
Answer:

magnetizing force

For either germanium or silicon diodes, the barrier potential decreases _____ for each Celsius degree rise.
3 mV
1 mV
4 mV
2 mV
Show Solution
Question:
For either germanium or silicon diodes, the barrier potential decreases _____ for each Celsius degree rise.
Answer:

2 mV

Refers specifically to steady state values of quantities in ac circuits which are complex numbers.
vector quantity
scalar quantity
domain
phasor quantity
Show Solution
Question:
Refers specifically to steady state values of quantities in ac circuits which are complex numbers.
Answer:

phasor quantity

If a magnetic flux cuts across 200 turns at a rate of 2 Wb/s, the induced voltage according to Faraday's law is about
100 V
600 V
200 V
400 V
Show Solution
Question:
If a magnetic flux cuts across 200 turns at a rate of 2 Wb/s, the induced voltage according to Faraday's law is about
Answer:

400 V

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Good luck to all future electronics engineers! If you have any specific questions or need further assistance, feel free to ask.

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