Vehicle Electrical & Electronic Diagnosis Quiz

16 Questions | Total Attempts: 288  Settings  A quick quiz to re-cap on the fundamental elements of diagnosis terms and procedures including some units of measurement, multimeter use, scope patterns and common abbrieviations

• 1.
Which of the following statements is correct?
• A.

Flemings Left hand rule relates to motors

• B.

Flemings Right hand rule relates to motors

• C.

Faradays Left hand rule relates to motors

• D.

Faradays Right hand rule relates to motors

• 2.
Fleming's Right Hand Rule relates to which component type?
• A.

Solenoids

• B.

Motors

• C.

Generators

• D.

Actuators

• 3.
What is the unit of electrical frequency?
• A.

Hall

• B.

Watts

• C.

Hurts

• D.

Hertz

• 4.
What does NTC stand for?
• A.

Negative temporal coefficient

• B.

Negative Temperature Coefficient

• C.

Normal thermal coefficient

• D.

Normal Temperature Coefficient

• 5.
If the resistance increases as the temperature increases what could this be refferred to as....
• A.

Physical Temperature Change

• B.

Positive Temperature Change

• C.

Positive Temporal Coefficient

• D.

Positive Temperature Coefficient

• 6.
In relation to an inductive type AC sensor which statement is correct?
• A.

As wheel speed increases the resistance level increases and current flow is reduced

• B.

As wheel speed increases frequency increases and amplitude increases

• C.

As wheel speed increases frequency increases but amplitude decreases

• D.

As wheel speed increase frequency decreases and amplitude increases

• 7.
What does PWM stand for?
• A.

Pulse Wide Mode

• B.

Phased Width Modulation

• C.

Pulse Width Modulation

• D.

Pulse Wide Modulation

• 8.
A digital signal would give you what type of pattern if checked with a scope?
• A.

Square Wave

• B.

Saw Tooth

• C.

Sine Wave

• D.

You can't test it with a scope just a resistance check

• 9.
If a vehicle had a high resistance in the lighting earth circuit what effect would this have on their operation?
• A.

The lamp/lamps would not light up at all

• B.

The bulbs would blow due to the proportional increase in current flow

• C.

The current flow would be decreased proportionally and as such the lamp would glow dimly

• D.

This would have no visible effect

• 10.
When testing an electrical circuit using a multimeter how would you test the resistance of a component or wire?
• A.

Disconnect the power supply, isolate the component or wire and set the multimeter to Ohms test in series

• B.

Disconnect the power supply, isolate the component or wire and set the multimeter to Ohms test in parallel

• C.

Connect the multimeter across the component or wire and test in parallel

• D.

Connect the multimeter in series with the component or wire with the multimeter set to amps

• 11.
When testing for a parasitic drain which of the following is the most practical?
• A.

Ignition off disconnect the battery earth and connect an ammeter in series

• B.

Set the meter to Amps and connect across the battery termonal in parallel

• C.

Connect the meter in parallel with the circuit with the battery disconnected

• D.

Connect the meter in series between the positive terminal and the positive lead but keep the negative lead disconnected

• 12.
When checking for voltage drop how should you connect your meter?
• A.

In series with the component and the power supply on

• B.

In parallel with the component with the power supply off

• C.

In series with the component and the power supply off

• D.

In parallel with the component and the power supply on

• 13.
When using a scope what do the X and Y axis represent?
• A.

Y is horizontal and represents the amplitude/voltage X is vertical and represent Frequency/timescale

• B.

X goes across/Horizontal and represents the timescale and the Y axis goes up and down/vertical and represents the amplitude/voltage

• C.

X is horizontal and represents the amplitude/voltage Y is vertical and represent Frequency/timescale

• D.

Y goes across/Horizontal and represents the timescale and the X axis goes up and down/vertical and represents the amplitude/voltage

• 14.
What component acts as an electrical one way valve until a certain voltage is breached then allows the current to flow in either direction. The componen resets itself once the voltage drops below its threhold again?
• A.

Circuit Breaker

• B.

Diode

• C.

Transistor

• D.

Zener Diode

• 15.
When testing a circuit with a voltmeter what is the rule of thumb for a maximum permitted volt drop on a feed/supply wire?
• A.

Within 2.5 Volts of battery voltage

• B.

0.5 Volts

• C.

Within 1 volt of battery voltage

• D.

12.6 Volts

• 16.
How would you test for current flow in a vehicle circuit?
• A.

Ignition off disconnect the battery earth and connect an ammeter in series

• B.

Ignition off disconnect the battery earth and connect an ammeter in parallel

• C.

Ignition on connect the ammeter in parallel across the battery terminals

• D.

Ignition off disconnect the battery and connect the ammeter in series

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