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## WAEC GCE PAST QUESTIONS & ANSWERS AUTO MECHANIC 2017

As a matter of fact this post covers all science subject such as auto mechanic, maths biology. chemistry, physics, english, and many more about WAEC GCE/NECO GCE, NABTEB AUTO MECHANIC past questions and answers, all you need is to take your time study and answers the questions below, by so doing you are getting your self ready for the next WAEC, NECO, NABTEB GCE examination 2017,2018,2019. WAEC GCE PAST QUESTIONS & ANSWERS AUTO MECHANIC 2017.

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Question 1
1. First and foremost the sketch below shows a type of suspension system.

### WAEC GCE PAST QUESTIONS & ANSWERS AUTO MECHANIC 2017

(a) (i) Identify the type of suspension system.
(ii)Name the parts labelled P, Q, R, Sand T.
(b) State two functions of a motor vehicle suspension system.
(c) Name two types of spring used in a motor vehicle suspension system.
(d) State the purpose of the damper in the suspension system.
_____________________________________________________________________________________________________
As a matter of fact the required responses are as follows:
(a) (i) Independent front suspension
(ii) P lower arm
Q coil spring
R upper arm
T Chassis frame.

(c) Springs used in motor vehicle are coil, leaf, rubber, air and torsion bar.
(d) Lastly the purpose of the damper is to reduce the oscillation of the spring.

Question 2.

(a)(i) Sketch a hydrometer.
(ii) Label four of its part.
(b) What is the state of charge of a battery cell for each of the following hydrometer readings?
(i) 1.240
(ii) 1.098
(iii) 1.265
(c) Name:
(i) the flammables gas given off by a lead-acid battery during charging.
(ii) Lastly three components of the lead-acid battery.

## WAEC GCE PAST QUESTIONS & ANSWERS AUTO MECHANIC 2017 _____________________________________________________________________________________________________

Furthermore the required responses to the various parts are given below.

(a) (i & ii)

A hydrometer

(b) (i) 1.240 – Half charged
(i i) 1.098 – Discharged
(iii) 1.265 – Fully charged
(c) (i) The flammable gas is hydrogen.
(ii) The components are casing, terminals, separators, plates. fine caps and sediment traps or bridge

Question 3
3 (a) List the strokes in a four-stroke compression ignition engine.
(b) Describe with sketches the two events that take place when the piston moves down.
(c) State one function of the crankshaft.
(d) State one firing order of a four-cylinder engine.
_____________________________________________________________________________________________________
Question 4
(a) State three reasons for lubrication.
(b) State four causes of excessive oil consumption in a vehicle engine.
(c) Name the device for checking oil level in the sump.
_____________________________________________________________________________________________________

## WAEC GCE PAST QUESTIONS & ANSWERS AUTO MECHANIC 2017

Question 5
(a) Explain the purpose of the suspension system.
(b) State why shock absorbers are incorporated in the suspension system.
(c) State two advantages of a tubeless tyre over a tubed type.
(d) State how the size of a tyre is determined.
(e) Explain why a swinging shackle is fitted to one end of a leaf spring.
_____________________________________________________________________________________________________

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