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Section 14

1. In order to ensure traffic safety and prevent accidents, you should, among others:
  • Check periodically the efficiency and functionality of the reserve lamps.
  • Replace the light bulb with others of better performance so as to secure their longest life.
  • Clean often the illuminating surfaces of the lights.
2. In order to have a safe driving and prevent accidents, you should, among others:
  • Check periodically the indicators’ function.
  • Leave the lamp glass dusty so as to prevent their fading.
  • Replace the bulbs with others of higher wattage so as to improve lamps’ efficiency.
3. The minimum thickness of the tyre tread of buses is:
  • 1,5 mm.
  • 1 mm.
  • 2 mm.
4. What does it mean when the oil warning light on the dashboard is on during the movement of the car?
  • That lubrication is normal.
  • That oil pressure is insufficient.
  • That the generator (dynamo) does not charge the battery.
5. What should you periodically check so as to restrict fuel consumption?
  • Tyre pressure.
  • Tyre tread depth.
  • The level of engine cooling fluid.
6. What causes the overheating of the wheel drums?
  • Malfunction of the shoe return springs.
  • Malfunction of the differential.
  • Irregular tyre pressure.
7. The danger switch that every bus has, designed to limit the risk of fire when the vehicle is stopped, cuts off:
  • The circuit of internal danger lighting.
  • The circuit of central electrical door locking.
  • Fuel supply.
8. Why, when you press the accelerator pedal, is the power produced by a diesel engine increased?
  • Because the inlet valve opens more.
  • Because more diesel goes to the fuel injectors.
  • Because current of greater intensity goes to the sparkling plug.
9. Which is the function of the silencer of the exhaust pipe:
  • To decrease the speed of exhaust gases outlet so as to reduce fuel consumption.
  • To decrease the speed of exhaust gases outlet so as to reduce noise.
  • To decrease the speed of exhaust gases outlet so as to warm up the interior of the vehicle.
10. A low temperature of the engine is noted. What may the possible cause be?
  • Damage of the thermostat.
  • Small capacity of the radiator.
  • Power-cut of the fan.
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