CETa EXAM STUDY GUIDE 2026-2027
COMPLETE QUESTIONS AND
VERIFIED CORRECT DETAILED
ANSWERS || ALREADY GRADED A+
<RECENT VERSION>
1. An oscilloscope with two vertical inputs, is commonly referred to as a
_______ oscilloscope.
A.
multi-trace
B.
dual-trace
C.
sweep trigger-trace
D.
modulation-trace - ANSWER B.
dual-trace
2. Voltage or potential difference is the measure of potential energy between
two points in a circuit and is commonly referred to as:
A.
voltage drop.
B.
voltage flow.
C.
difference in conduction.
D.
potential resistance. - ANSWER A.
voltage drop.
3. What is impedance?
A.
,The resistance of a component at a given frequency
B.
The conductivity of a component at a given frequency
C.
The potential difference of a component at a given frequency
D.
The ability of a component to store a charge at a given frequency - ANSWER
A.
The resistance of a component at a given frequency
4. A resistor has three color bands of red, brown and brown. What is the ohmic
value of this resistor?
A.
205 Ohms
B.
100 Ohms
C.
210 Ohms
D.
330 Ohms - ANSWER C.
210 Ohms
5. What components value is measured in millihenries?
A.
Capacitor
B.
Inductor
C.
Resistor
a. D.
b. Diode - ANSWER B.
c. Inductor
6. Ohm's Law characterizes the relationship between:
A.
power, coulombs, current and joules.
B.
inductance, resistance, current and joules.
C.
power, resistance, current and voltage.
, D.
capacitance, inductance, voltage and current. - ANSWER C.
power, resistance, current and voltage.
7. 8.33 meters is the full wavelength in air for what RF frequency? - ANSWER
36 MHz
8. Decimal 164 would appear as what in binary? - ANSWER 10100100
9. A resistor has color stripes yellow, violet, violet, silver. It is? - ANSWER
470 MegOhm +/- 10%
10.What is the total capacitance of three capacitors valued at 100uf, 100uf and
50uf when connected in series? - ANSWER 25 pf
11.What is the ripple frequency of a full wave single phase bridge rectifier
operated at 60 Hz? - ANSWER 120 Hz
12.What emits a voltage when heated or cooled? - ANSWER Thermocouple
13.Adding the binary numbers 101011 and 001110 will give you what result? -
ANSWER 111001
14.A component that reduces in resistance as it is heated. - ANSWER A
negative temperature coefficient thermistor
15.An autotransformer - ANSWER has a single winding
16.A dual trace oscilloscope differs from a single trace in that only the dual
trace scope: - ANSWER alternates sweeps
17.If an RF signal Voltage is reduced by 6db it is then : - ANSWER half the
original size
18.Applying positive voltage to the P end and negative to the N end of a
germanium diode: - ANSWER will forward bias it
19.You would probably prefer a digital VOM over an ordinary analog meter: -
ANSWER for most accuracy
, 20.You should expect the video amplifier in a radar or TV receiver to have a
frequency response of: - ANSWER 0-6 MHzd
21.The radio communication mode that utilizes the basic frequency and one of
the side bands: - ANSWER is called "SSB"
22.When using fiber optic to transfer a signal, the light must: - ANSWER enter
the "cone of acceptance"
23.The energy stored in a coil is measured in: - ANSWER Henrys
24.The telephone communication term "Cellular" refers to: - ANSWER small
geographic areas covered by each base station
25.Integrated circuit failures often exhibit: - ANSWER open or short conditions
26.Which of these would you normally choose to cause an LED to light? -
ANSWER 3 VDC
27.A capacitor (3/8"x1/8" ceramic or mica) marked 47K is: - ANSWER 47 pf
+/- 10%
28.A "digital storage oscilloscope": - ANSWER uses micro processing and
memory to allow close analysis of signal.
29.Carbon microphones are much like variable: - ANSWER resistors
30.An antenna that is longer than another: - ANSWER will have a lower
resonant frequency
31.An 8 bit binary code allows how many logical combinations. - ANSWER
256
32.An inductor in an electronic circuit: - ANSWER resists AC current flow
33.A printer directly connected to a personal computer would use what kind of
connection? - ANSWER usb or parallel centronics
34.The digital method of representing characters by using combinations of
zeros and ones is called: - ANSWER Binary
COMPLETE QUESTIONS AND
VERIFIED CORRECT DETAILED
ANSWERS || ALREADY GRADED A+
<RECENT VERSION>
1. An oscilloscope with two vertical inputs, is commonly referred to as a
_______ oscilloscope.
A.
multi-trace
B.
dual-trace
C.
sweep trigger-trace
D.
modulation-trace - ANSWER B.
dual-trace
2. Voltage or potential difference is the measure of potential energy between
two points in a circuit and is commonly referred to as:
A.
voltage drop.
B.
voltage flow.
C.
difference in conduction.
D.
potential resistance. - ANSWER A.
voltage drop.
3. What is impedance?
A.
,The resistance of a component at a given frequency
B.
The conductivity of a component at a given frequency
C.
The potential difference of a component at a given frequency
D.
The ability of a component to store a charge at a given frequency - ANSWER
A.
The resistance of a component at a given frequency
4. A resistor has three color bands of red, brown and brown. What is the ohmic
value of this resistor?
A.
205 Ohms
B.
100 Ohms
C.
210 Ohms
D.
330 Ohms - ANSWER C.
210 Ohms
5. What components value is measured in millihenries?
A.
Capacitor
B.
Inductor
C.
Resistor
a. D.
b. Diode - ANSWER B.
c. Inductor
6. Ohm's Law characterizes the relationship between:
A.
power, coulombs, current and joules.
B.
inductance, resistance, current and joules.
C.
power, resistance, current and voltage.
, D.
capacitance, inductance, voltage and current. - ANSWER C.
power, resistance, current and voltage.
7. 8.33 meters is the full wavelength in air for what RF frequency? - ANSWER
36 MHz
8. Decimal 164 would appear as what in binary? - ANSWER 10100100
9. A resistor has color stripes yellow, violet, violet, silver. It is? - ANSWER
470 MegOhm +/- 10%
10.What is the total capacitance of three capacitors valued at 100uf, 100uf and
50uf when connected in series? - ANSWER 25 pf
11.What is the ripple frequency of a full wave single phase bridge rectifier
operated at 60 Hz? - ANSWER 120 Hz
12.What emits a voltage when heated or cooled? - ANSWER Thermocouple
13.Adding the binary numbers 101011 and 001110 will give you what result? -
ANSWER 111001
14.A component that reduces in resistance as it is heated. - ANSWER A
negative temperature coefficient thermistor
15.An autotransformer - ANSWER has a single winding
16.A dual trace oscilloscope differs from a single trace in that only the dual
trace scope: - ANSWER alternates sweeps
17.If an RF signal Voltage is reduced by 6db it is then : - ANSWER half the
original size
18.Applying positive voltage to the P end and negative to the N end of a
germanium diode: - ANSWER will forward bias it
19.You would probably prefer a digital VOM over an ordinary analog meter: -
ANSWER for most accuracy
, 20.You should expect the video amplifier in a radar or TV receiver to have a
frequency response of: - ANSWER 0-6 MHzd
21.The radio communication mode that utilizes the basic frequency and one of
the side bands: - ANSWER is called "SSB"
22.When using fiber optic to transfer a signal, the light must: - ANSWER enter
the "cone of acceptance"
23.The energy stored in a coil is measured in: - ANSWER Henrys
24.The telephone communication term "Cellular" refers to: - ANSWER small
geographic areas covered by each base station
25.Integrated circuit failures often exhibit: - ANSWER open or short conditions
26.Which of these would you normally choose to cause an LED to light? -
ANSWER 3 VDC
27.A capacitor (3/8"x1/8" ceramic or mica) marked 47K is: - ANSWER 47 pf
+/- 10%
28.A "digital storage oscilloscope": - ANSWER uses micro processing and
memory to allow close analysis of signal.
29.Carbon microphones are much like variable: - ANSWER resistors
30.An antenna that is longer than another: - ANSWER will have a lower
resonant frequency
31.An 8 bit binary code allows how many logical combinations. - ANSWER
256
32.An inductor in an electronic circuit: - ANSWER resists AC current flow
33.A printer directly connected to a personal computer would use what kind of
connection? - ANSWER usb or parallel centronics
34.The digital method of representing characters by using combinations of
zeros and ones is called: - ANSWER Binary
