WorksheetsElectrical Controls
Total questions: 40
Worksheet time: 28mins
Name
Class
Date
1.
Circuit defects are being discussed.
Technician A says an open can be only on the ground side of the circuit.
Technician B says an unwanted resistance can result from a corroded connector.
Who is correct?
Technician A says an open can be only on the ground side of the circuit.
Technician B says an unwanted resistance can result from a corroded connector.
Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
2.
Testing the fuse is being discussed.
Technician A says sometimes a visual inspection of a fuse or fusible link does not reveal that it is open.
Technician B says to use a jumper wire to bypass the fuse in order to test the circuit.
Who is correct?
Technician A says sometimes a visual inspection of a fuse or fusible link does not reveal that it is open.
Technician B says to use a jumper wire to bypass the fuse in order to test the circuit.
Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
3.
Testing the fuse is being discussed.
Technician A says sometimes a visual inspection of a fuse or fusible link does not reveal that it is open.
Technician B says to use a jumper wire to bypass the fuse in order to test the circuit.
Who is correct?
Technician A says sometimes a visual inspection of a fuse or fusible link does not reveal that it is open.
Technician B says to use a jumper wire to bypass the fuse in order to test the circuit.
Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
4.
Testing of a switch is being discussed. Technician A says a switch can be tested with a voltmeter.
Technician B says to use a fused jumper wire to see if the switch is operating.
Who is correct?
Technician B says to use a fused jumper wire to see if the switch is operating.
Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
5.
Testing of a potentiometer is being discussed. Technician A says a voltmeter can be used if jumper wires are connected to the wire connector and sensor to gain access to the test points.
Technician B says the wires can be pierced to test for voltage.
Who is correct?
Technician B says the wires can be pierced to test for voltage.
Who is correct?
a)
A only
b)
B only
c)
Both A and B
d)
Neither A nor B
6.
A normally ____ switch will not allow current flow when it is in its rest position. A normally ____ switch will allow current flow when it is in its rest position
a)
open, closed
b)
closed, open
c)
short, ground
7.
A ____is used in electronic circuits as a very fast switching device.
a)
Diode
b)
Relay
c)
Transistor
d)
Rectifer
8.
A ____is an electrical one-way check valve that will allow current to flow in one direction only.
a)
Diode
b)
Relay
c)
Transistor
d)
Rectifer
9.
A ____is an electromechanical device that uses low current to control a high-current circuit.
a)
Diode
b)
Transistor
c)
Relay
d)
Rectifer
10.
Which of the following is the correct statement?
a)
An open means there is continuity in the circuit
b)
A short bypasses a portion of the circuit
c)
High-amperage draw indicates an open circuit
d)
High resistance in a circuit increases current flow.
11.
Which of the following statements is/are correct?
a)
A. A zener diode is an excellent component for regulating voltage.
b)
B. A reverse-biased diode lasts longer than a forward-biased diode.
c)
C. The switches of a transistor last longer than those of a relay
d)
D. Both A and C
12.
A magnetic pulse generator sensor creates what type of signal?
a)
Pulse width
b)
Square wave
c)
AC signwave
d)
Digital
13.
A NTC thermistor What will the resistance do as the temperature increases?
a)
Stay the same
b)
Increase
c)
Decrease
14.
When the Processor receives an Analog signal what will it need to go to before the processor can read it?
a)
D to A converter
b)
A to D converter
c)
Ram
d)
Rom
15.
A potentiometer is what type of sensor?
a)
Voltage divider
b)
Voltage generator
c)
PTC
d)
NTC
16.
A coolant temp. sensor uses a ?
a)
PTC
b)
NTC
c)
PNP
d)
NPN
17.
The feedback signal tells the computer:
a)
where the component is
b)
how a component is responding
c)
all of the above
18.
Components that collect information are:
a)
Switches, sensors, senders, and sending units
b)
Relays, solenoids, and fuses
c)
All of the above
d)
None of the above
19.
Battery voltage can vary between ________ depending on electrical system load.
a)
8 and 18 volts
b)
8 and 15 volts
c)
6 and 12 volts
d)
5 and 12 volts
20.
VREF (reference voltage) is typically:
a)
8 Volts
b)
3 Volts
c)
5 Volts
d)
12 Volts
21.
An oscilloscope is a device that shows a graphical representation of voltage verses voltage
a)
True
b)
False
22.
On signal return circuits adding other devices to this circuit improve the signals reliability
a)
True
b)
False
23.
Duty cycle is the percentage of time that a voltage signal is:
a)
On
b)
Off
c)
Low
d)
None of the above
24.
Pulse width is the amount of time that a signal is:
a)
Off
b)
On
25.
Frequency is measured in:
a)
Volts
b)
Amps
c)
Hertz
d)
Ohms
26.
Three types of input signals are:
a)
Digital, Analog DC, Analog AC
b)
Digital ac, Analog dc, Analog AC
c)
Digital AC, Analog DC, Analog DC
d)
Digital AC, Analog DC, Analog AC
27.
A power side switch is placed:
a)
in parallel with the load
b)
before the load in series
c)
after the load in series
d)
none of the above
28.
A switch is either
a)
On or Off
b)
Open or Closed
c)
Power or Ground
d)
All of the above
29.
A pull down switch is a power side switch
a)
True
b)
False
30.
A pull up switch is a ground side switch
a)
True
b)
False
31.
Phototransistors are used as:
a)
ground side switch
b)
resistors
c)
steering wheel and auto headlight inputs
d)
one of the above are incorrect
32.
Technician A says that Hall Effect sensors can be tested with an ohm meter, Technician B says Hall Effect sensors cannot be tested. Who is correct?
a)
Technician A
b)
Technician B
c)
Both
d)
Neither
33.
Technician A says that Hall Effect sensors operate by magnetic induction. Technician B says that the magnet acts as a trigger to allow voltage to flow. Who is correct?
a)
Technician A
b)
Technician B
c)
Both
d)
Neither
34.
A voltage divider circuit is:
a)
a parallel circuit in which the module measures voltage
b)
a series circuit in which the module measures the voltage
c)
how the reduced reference voltage is made
d)
none of the above
35.
Technician A says that a thermal resistor is a variable resistor Technician B says that a photo resistor changes resistance with temperature. Who is correct?
a)
Technician A
b)
Technician B
c)
Both
d)
Neither
36.
Thermistors are a type of :
a)
pull down switch
b)
pull up switch
c)
voltage divider
d)
potentiometer
37.
Two types of sun load sensors are photo resistive and photovoltaic.
a)
True
b)
False
38.
Potentiometers have:
a)
One wire
b)
Two Wire
c)
Three Wire
d)
Four Wire
39.
?Technician A says that a potentiometer is a sensor that indicates a mechanical position. Technician B says that potentiometers get “bad spots” that will show up when it is checked with a DVOM.
Who is correct
Who is correct
a)
Technician A
b)
Technician B
c)
Both
d)
Neither
40.
An oscilloscope is a device that shows a graphical representation of voltage verses time.
a)
True
b)
False
100 %
