AfterSalesTraining R 505 Pressure Charged Engines Published by AfterSalesTraining © MG Rover Group All rights reserved. No part of this publication may be reproduced, stored as a retrieval system or transmitted in any form; electronic, mechanical, recording or other means, without prior written permission from MG Rover Group. EndTestQuestions

AfterSalesTraining R 505 Pressure Charged Engines Version 1 05/ Pressure Charged Engines End test questions 1.The principles of a turbocharger are: a.Exhaust gases act on a compressor wheel to pressurise the inlet charge b.Exhaust gases act on a turbine wheel to pressurise the inlet charge c.A mechanical drive rotates the turbine wheel to pressurise the inlet charge d.An electrical motor turns the compressor wheel to pressurise the inlet charge 2.The K Series engine was first introduced in: a.1987 b.1988 c.1989 d Turbochargers can increase an engines power output up to: a.25% b.30% c.40% d.45% 4.On a turbocharged engine power loss at high altitudes is prevented by: a.The general increase in power b.A separate engine tune c.The turbocharger being controlled to maintain sea level atmospheric pressure d.The turbocharger being tuned to increase boost pressures by 20% 5.The patent for the very first type of turbocharger was obtained in: a.1875 b.1910 c.1940 d.1965

Pressure Charged Engines End test questions 6.Turbochargers can rotate at speeds up to: a.5000 rpm b rpm c.100,000 rpm d.220,000 rpm 7.Which of the following is a true statement? a.The turbine and compressor wheels are identical b.A turbocharger is constructed from cast aluminium c.A turbocharger wastegate actuator must never be adjusted in service d.A turbocharger can be fitted to any engine as an accessory 8. Turbocharger casings are usually manufactured from a special alloy called? a.Nireset b.Aluminium c.Platiron d.Nicad 9. The purpose of an intercooler is: a.To cool the intake air to decrease the density b.To cool the intake air to increase the density c.To maintain the intake air density d.To aid the cooling of the turbocharger e. 10. Turbo boost pressure on the K Series engine is sensed by: a.A modified TMAP sensor b.A dedicated boost pressure sensor c.A pressure sensor integral to the ECM d.It is not necessary to sense boost pressure on the K Series engine AfterSalesTraining R 505 Pressure Charged Engines Version 1 05/2002 3

AfterSalesTraining R 505 Pressure Charged Engines Version 1 05/ Pressure Charged Engines End test questions 11. The boost pressure control solenoid is controlled by: a.Vacuum b.Direct battery voltage c.Pressure d.Pulse width modulation 12. The power differences achieved on the K Series Turbo are achieved by: a.Varying the compression ratio b.Varying the valve timing c.Varying the boost pressure map d.Varying throttle body size 13. If the maximum boost pressure is exceeded the ECM will: a.Switch off the ignition coils b.Switch off the injectors c.Illuminate a warning lamp d.Nothing at all 14. Turbocharger recirculation is fitted to: a.Reduce surging in the intake system under sudden deceleration b.Act as exhaust gas recirculation under deceleration c.Reduce surging in the exhaust system under sudden deceleration d.Act as exhaust gas recirculation during light throttle cruising 15. Wastegate operation can be checked by: a.Force outputs using T 4 b.A handheld vacuum pump c.Vehicle maintenance using T 4 d.A handheld pressure pump

AfterSalesTraining R 505 Pressure Charged Engines Version 1 05/ Pressure Charged Engines End test questions 16. Boost pressure is limited to a lower figure when: a.Coolant temperature is below 80ºC b.Engine oil temperature is below a predetermined limit c.Coolant temperature is above 80ºC d.Engine oil temperature is above a predetermined limit 17. Excessive exhaust gas temperatures can be caused by: a.Incorrect air to fuel ratios b.Restricted exhaust gas flow c.Faulty oxygen sensors d.All of the above 18. The cooling system stub pipes have a tapered face machined as a feature of the design, why? a.To ensure a good seal b.To allow sealant to be used c.To actuate the spring clip on the quick fit connector d.To prevent the hoses from slipping 19. The cooling system pressure cap break off pressure for the 1.8 Turbo is: a.1.4 to 2.0 bar b.0.9 to 1.2 kPa c.1.4 to 2.0 kPa d.0.9 to 1.2 bar 20. What would be the consequence of adding 3.5 litres of prepared coolant to the fill container when using the vacuum fill equipment on Rover Turbo? a.None b.Unwanted air being drawn into the cooling system c.Wasted coolant d.Over pressurisation of the cooling system