Q1. Alternating Current has:
Candidate Answer - A changing polarity, an amplitude component and a frequency,
Result - Correct
Q2. The Electrical Pressure that moves charged particles in a circuit is measured in
Candidate Answer - Volts
Result - Correct
Q3. The conversion of energy into work over a certain period of time is
Candidate Answer - Potential
Result - Incorrect
Q4. The conversion of electrical energy into another form of work is measured in
Candidate Answer - Watts
Result - Correct
Q5. You have a 55w bulb running a conventional 12v system, what will the current flow be?
Candidate Answer - 4.58 Amps
Result - Correct
Q6. What is the resistance of a bulb with a current flow of 5amps with a voltage of 24Volts
Candidate Answer - 4.8 Ohms
Result - Correct
Q7. The sum of the individual voltage drops in a series circuit must be ______ the applied voltage
Candidate Answer - equal to
Result - Correct
Q8. The voltage applied to a DC Series Circuit that must equal the sum of the voltage drops with a circuit is known as
Candidate Answer - Kirchhoff law
Result - Correct
Q9. When circuit elements are connected so that two terminals are shared and voltage is common across the shared terminals this is called
Candidate Answer - Parallel
Result - Correct
Q10. An adjustable or variable resistor is known as a
Candidate Answer - Potentiometer
Result - Correct
Q11. A __________________ is a device placed in series with a power line which, when an excess amount of current is sensed, will open the power connection, thus protecting a circuit or system.
Candidate Answer - Circuit Breaker
Result - Correct
Q12. A bad connection or any point of resistance on a circuit will cause a
Candidate Answer - Voltage drop
Result - Correct
Q13. Where more than one ground path is created, and different paths create a voltage differential, this is known as a
Candidate Answer - Ground loop
Result - Correct
Q14. A ground loop creates interference. How is it created?
Candidate Answer - By any non zero resistances between the wiring to ground and each piece of equipment
Result - Correct
Q15. When connecting a high current device, connect a fuse at the battery no more than 25 cm from the battery and make sure it is
Candidate Answer - Before the bulkhead
Result - Correct
Q16. No current can flow in an
Candidate Answer - Closed circuit
Result - Incorrect
Q17. An electromechanical device that uses a coil (electro) to move switch contacts (mechanical) is known as a
Candidate Answer - Relay
Result - Correct
Q18. What are the main elements of a relay
Candidate Answer - Coil, spring, contacts
Result - Correct
Q19. Whenever the relay has an INTERNAL SPIKE SUPPRESSION DIODE, to activate the relay
Candidate Answer - 85 must always be connected the Negative (-) terminal and 86 must always be connected to the Positive (+) terminal
Result - Correct
Q20. Where a relay has extra contacts labelled 30, 85, 86 ,87 and 87a the relay will be a
Candidate Answer - Single pole double throw
Result - Correct
Q21. The process of changing AC current to DC current is known as
Candidate Answer - Rectification
Result - Correct
Q22. A battery can also be referred to as a
Candidate Answer - Capacitor
Result - Correct
Q23. The main battery on a vehicle is normally a lead-acid compound and can be recharged. It is known as a
Candidate Answer - Secondary battery
Result - Correct
Q24. What type of cable should NOT be used in a vehicle environment
Candidate Answer - Solid cable
Result - Correct
Q25. What is an electrical two- terminal device which allows current to pass through it in one direction only
Candidate Answer - Diode
Result - Correct
Q26. A diode is used to:
Candidate Answer - To keep current constant
Result - Incorrect
Q27. In order to avoid self destruction, what is normally connected to an LED in series to limit the current across it
Candidate Answer - Resistor
Result - Correct
Q28. A professional installation is not just about the quality of your work. It also includes
Candidate Answer - Your preparedness and professionalism
Result - Correct
Q29. When the amperage draw of a system exceeds 120% of the alternator’s maximum output, which components will sustain damage
Candidate Answer - The battery and alternator
Result - Correct
Q30. Can Bus wires are twisted to help reduce
Candidate Answer - Interference
Result - Correct
Q31. It is always advisable to run power and signal leads away from each other. This is to avoid
Candidate Answer - Interference
Result - Correct
Q32. In case of any conflict when complying with installation instructions, which instruction take priority?
Candidate Answer - The vehicle manufacturer
Result - Correct
Q33. What does EMC stand for?
Candidate Answer - Electro Magnetic Compatibility
Result - Correct
Q34. How much impedance should an ideal antenna cable have?
Candidate Answer - 25 Kohm
Result - Incorrect
Q35. If the antenna cable is too short for the installation, ideally you should
Candidate Answer - Use an adaptor to connect 2 cables together
Result - Incorrect
Q36. Why must an installer abide by the EMC Directive
Candidate Answer - To maintain warranties
Result - Incorrect
Q37. The main benefit of using an antenna analyser on an airwave device is:
Candidate Answer - To check that the connections to the radio are acceptable
Result - Incorrect
Q38. A GPS antenna needs to be installed:
Candidate Answer - With a clear view of the sky
Result - Correct
Q39. Is it acceptable to install a transceiver or any other device in the load storage area of a vehicle
Candidate Answer - Yes, if it is a commercial vehicle
Result - Incorrect
Q40. A fuse is ideally installed as close to the power as possible
Candidate Answer - To protect the car
Result - Incorrect
Q41. You have a high current device to connect to the vehicle. You should take the power from:
Candidate Answer - The battery
Result - Correct
Q42. You have a device which has a fuse installed on the device itself. Is it correct to install a separate fuse on the cable?
Candidate Answer - No, the fuse installed on the device is adequate
Result - Incorrect
Q43. Should all equipment power supplies, whether taken from the ignition or battery circuits, be fused?
Candidate Answer - Yes, all fuses must be protected by an adequate fuse of the correct rating
Result - Correct
Q44. If the initial test of a GPS antenna is not consistent with expectations you should firstly:
Candidate Answer -
Result - Incorrect
Q45. What must the business provide to the technician before any work is carried out on a vehicle?
Candidate Answer - A risk assessment document
Result - Correct