CETA [REVAMPED] QUESTIONS WITH
VERIFIED SOLUTIONS
If SW1 were to open, the output of the gate circuit shown will be __________ .
Floating
Low
High
Approximately 2.5 V ✅✅ANSW-Low
Waveguides are not utilized at VHF or UHF frequencies because ______
Characteristic impedance is too high
Resistance to high frequencies is too low
Large waveguides dimensions as required at lower frequencies are not practical
Grounding problems ✅✅ANSW-Large waveguides dimensions as required at lower frequencies
are not practical
The disassembled item shown in the figure is a/an _______
Banana plug
F connector
RCA plug
BNC connector ✅✅ANSW-BNC connector
Which of the silicon diodes in the figure will conduct, given the voltages applied ?
(A) 1.2v -|<- 1.8v
(B) .9v -|<- .2v
(C) -1.2v ->|- 1.8v
(D) -.9v ->|- .2v ✅✅ANSW-(A) 1.2v -|<- 1.8v
,In the drawing provided, what is the combined reactance of the two capacitors in series Series:
(V=40, Freq=100; C1=2uF; C2= 4uF)
Approximately 1.194 ohms
Approximately 265 ohms
Approximately 24 ohms
Approximately 0.00377 ohms ✅✅ANSW-Approximately 1.194 ohms
Which is the equivalent to 100 microwatts?
0.1 milliwatts
1 milliwatts
1.0 milliwats
10 nanowatts ✅✅ANSW-0.1 milliwatts
A power supply that is being serviced is found to have several 250 mfd capacitors connected in
parallel. To avoid shock from retained charge after disconnecting the power, these capacitors
______ .
May be ignored
Should be disconnected
Should be discharged to chassis ground, with a suitable resistor
Should be isolated with a non-conductive cover and avoided ✅✅ANSW-Should be discharged to
chassis ground, with a suitable resistor
In the following operational amplifier block diagram, which input is "inverting" ?
A
B
C
D ✅✅ANSW-A
, Which of the following might be used as a key element in DC motor electronic speed controls?
Delta coil
MOV
Slip rings
Comparator op-amps ✅✅ANSW-Delta coil
If a co-worker is found unconscious due to electrical shock, after insuring any hazard is removed and
verifying there is no pulse, you should?
Call the victims HMO
Check blood pressure
Place the victim in a sitting position
If qualified, properly administer CPR after seeking medical help ✅✅ANSW-If qualified, properly
administer CPR after seeking medical help
In the figure shown, if A and B are low, and C and D are high, what is the output level at E ?
Low, as shown
High
Cannot be determined
This circuit cannot work with those input levels ✅✅ANSW-High
Diode semiconductors are marked with a band at the _______ end.
Cathode
Anode
Center
Base element ✅✅ANSW-Cathode
VERIFIED SOLUTIONS
If SW1 were to open, the output of the gate circuit shown will be __________ .
Floating
Low
High
Approximately 2.5 V ✅✅ANSW-Low
Waveguides are not utilized at VHF or UHF frequencies because ______
Characteristic impedance is too high
Resistance to high frequencies is too low
Large waveguides dimensions as required at lower frequencies are not practical
Grounding problems ✅✅ANSW-Large waveguides dimensions as required at lower frequencies
are not practical
The disassembled item shown in the figure is a/an _______
Banana plug
F connector
RCA plug
BNC connector ✅✅ANSW-BNC connector
Which of the silicon diodes in the figure will conduct, given the voltages applied ?
(A) 1.2v -|<- 1.8v
(B) .9v -|<- .2v
(C) -1.2v ->|- 1.8v
(D) -.9v ->|- .2v ✅✅ANSW-(A) 1.2v -|<- 1.8v
,In the drawing provided, what is the combined reactance of the two capacitors in series Series:
(V=40, Freq=100; C1=2uF; C2= 4uF)
Approximately 1.194 ohms
Approximately 265 ohms
Approximately 24 ohms
Approximately 0.00377 ohms ✅✅ANSW-Approximately 1.194 ohms
Which is the equivalent to 100 microwatts?
0.1 milliwatts
1 milliwatts
1.0 milliwats
10 nanowatts ✅✅ANSW-0.1 milliwatts
A power supply that is being serviced is found to have several 250 mfd capacitors connected in
parallel. To avoid shock from retained charge after disconnecting the power, these capacitors
______ .
May be ignored
Should be disconnected
Should be discharged to chassis ground, with a suitable resistor
Should be isolated with a non-conductive cover and avoided ✅✅ANSW-Should be discharged to
chassis ground, with a suitable resistor
In the following operational amplifier block diagram, which input is "inverting" ?
A
B
C
D ✅✅ANSW-A
, Which of the following might be used as a key element in DC motor electronic speed controls?
Delta coil
MOV
Slip rings
Comparator op-amps ✅✅ANSW-Delta coil
If a co-worker is found unconscious due to electrical shock, after insuring any hazard is removed and
verifying there is no pulse, you should?
Call the victims HMO
Check blood pressure
Place the victim in a sitting position
If qualified, properly administer CPR after seeking medical help ✅✅ANSW-If qualified, properly
administer CPR after seeking medical help
In the figure shown, if A and B are low, and C and D are high, what is the output level at E ?
Low, as shown
High
Cannot be determined
This circuit cannot work with those input levels ✅✅ANSW-High
Diode semiconductors are marked with a band at the _______ end.
Cathode
Anode
Center
Base element ✅✅ANSW-Cathode
