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 Tchiwanese Motorcycle "Theory" Test

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PostSubject: Tchiwanese Motorcycle "Theory" Test   Mon Jun 08, 2015 5:34 am

Maybe this is off-topic and mods may want to move it.

I need to get a motorcycle license here (and maybe a car one, since driving on an IDP for so long is a bit iffy)

I sometimes have a bit of a gloat about not having much of an MOT to worry about. Here's the flip-side. The TAIWAN driving test "Mechanical Knowledge" questions.

In the “real” world, mechanical questions would be “universal”, since mechanical realities pretty much are (with perhaps minor variations due to climate).

This would mean that, if you had reasonable mechanical knowledge, you could rely on answering these questions correctly.

However, this isn’t the real world. This is Taiwan, where, due to a combination of bizarre content (so much HGV/diesel stuff in a motorcycle test?), translation problems, Chinglogic, and perhaps culturally imposed cluelessness, this bit isn’t very straightforward.

This selection attempts to pick questions that one might, with a reasonable level of mechanical knowledge, still get wrong.

In many cases this would be because the “official” answer (and/or the question) is, IMO, absolute bollocks. I might be wrong about that in some cases. If you can be bothered to read all (or any) of this and you can come up with a reasonable explanation, I'm all virtual ears.

(Note: The single digit after the 3-digit question number indicates the "correct" answer)

002 3 Diesel engine compression refers to (1) compressing pure diesel fuel. (2)
compressing a mixture of air and diesel fuel. (3) compressing pure air.

Comment : presumably because the fuel is injected separately, but at some points in the cycle a mixture is being compressed.

005 2 Which of the following is the normal operating temperature of a diesel engine?(1) 70 to 85 degrees Fahrenheit. (2) 75 to 95 degrees Celsius. (3) 140 to 180 degrees Celsius.

Comment : presumably refers to coolant temp.

009 2 If the vehicle runs out of diesel fuel when the engine is running, you need to (1)add fuel to the tank. (2) fill up the fuel tank and get rid of any air in the fuel lines.(3) Both statements are correct.

Comment : Since 1 is contained in 2, Both statements are correct.

012 1 If the air pressure in the tires is too low, which of the following will happen? (1) The sidewalls of the tires will wear out faster. (2) The tire treads will wear down faster. (3) This will have no damaging affect on the tires.

Comment : Simplistic. It’ll be 1 and 2

018 3 If brake oil in one braking system of a dual-braking system is leaking, what will happen? (1) The braking system will still work for three tires. (2) Both of the breaking systems will fail completely. (3) The brakes will still work for the tires on one end of the car.

Comment : IIRC the split is usually diagonal, so this is wrong

027 1 If the clutch pedal gap increases too much, (1) you will have hard time shifting.(2) the engine will put out less horsepower (Hp). (3) the clutch will slip.

Comment : I suppose “clutch pedal gap” means pedal free travel

029 1 The air pressure difference between the two double-mounted tires at the rear of a large truck should not be higher than (1) 5%. (2) 15%. (3) 25%. Otherwise, the tires will more easily have a blowout.

Comment: This is a motorcycle test question?

031 1 To park a manual drive vehicle, you must shift into (1) Park (P). (2) Reverse (R)). (3) Neutral (N) and use the hand (emergency) brake at the same time.

Comment : “manual drive vehicles” don’t have (1) Park (P) so this is wrong

032 3 Under normal driving conditions, the engine temperature (1) is higher in the winter. (2) is lower in the summer. (3) varies.

Comment : not by much

039 3 What kind of oil do you put in a 4-stroke engine? (1) Oil mixed with gasoline.(2) Lubrication oil. (3) Regular oil.

Comment : Meaningless Q + A / distinction

040 3 What is the normal color of smoke discharged by a 4-stroke gasoline engine? (1) Black. (2) Blue and white. (3) It’s colorless.

Comment : Then it isn’t “smoke”

046 2 How do you make it impossible to start a gasoline engine? (1) Cut off the fuel supply. (2) Disable the spark plugs. (3) Reduce the master cylinder pressure.

Comment : 1+2 will both do it, unless you consider that an engine started on residual fuel has had its fuel supply cut off. (it hasn’t, not yet)

049 2 What are the advantages of having a turbocharger? (1) It improves the
performance of an idling engine. (2) It enhances the performance of an engine
running at medium or high speeds. (3) It improves the performance of an engine running at a constant speed.

Comment : 3 also true.

057 2 If the fluid level in the overflow tank of the cooling system gets too high, it’s
probably because (1) the radiator is leaking. (2) the radiator cap was not completely tightened. (3) the vehicle cooling system doesn’t have a thermostat.

Comment : Uh?

059 3 The air filter is designed to (1) prevent dust from getting into the cylinders. (2) prevent combustion and fire in the exhaust pipe. (3) Both statements are correct.

Comment : WTF? - I suppose this is a mis-translated / misunderstood reference to a "flame arrestor" function of the air filter in the event of a backfire. Dunno if modern paper elements are really effective in that role, but I suppose ye olde wire mesh/oilbath ones might have been.

Still wouldn't start a "fire in the exhaust pipe", unless the engine was running backwards and the intake manifold became the exhaust pipe. This super-esoteric situation (in a diesel) actually appears as a test question elsewhere:

In a MOTORCYCLE test, already. Rolling Eyes

062 1 Which is the best cooling water for engines? (1) Distilled water. (2) Hard water.(3) Water mixed with minerals.

Comment : I’ve seen this disputed, but I suppose its received opinion

066 2 If you use the clutch too often, which of the following parts will probably
become damaged? (1) The clutch bearings. (2) The clutch. (3) The clutch fork.

Comment : Assuming you can “use the clutch too often” (?) why not all of them?

067 2 When clutch is worn out, it (1) becomes looser. (2) becomes tighter. (3) makes no difference.

Comment : Dunno what “(2) becomes tighter “ means. Suppose the pedal travel is reduced?

069 3 If there’s no gap between the brake pedal and the floorboard, the (1) brakes won’t function well. (2) the brakes will function better. (3) the brakes will stick and not work.

Comment : Meaningless question/distinction

070 1 The clutch in a rear-wheel drive vehicle is located (1) in front of the
transmission. (2) behind the transmission. (3) inside the transmission.

Comment : “transmission” is apparently being mis-translated as gearbox here ( or that’s American English? – which is sort of an institutionalised mis-translation) because the clutch is part of the transmission.

077 2 If you drive a car normally, as the mileage increases, the clutch will (1) gradually become looser. (2) gradually become tighter. (3) remain the same.

Comment : Again, dunno what “(2) become tighter “ means here. Suppose the pedal travel is reduced?

080 1 The longer you drive a vehicle, the gap between the brake pedal and the
floorboard (1) will become larger. (2) will become smaller. (3) stay the same.

Comment : Uh? Pretty sure hydraulic brakes are self-adjusting and the brake pedal height should not change with pad/shoe wear, though the level of brake fluid in the master cylinder reservoir drops. This isn't a ref to cable-brakes on mc's, since they don't have "floorboards". Scooters do but hardly any of them have brake pedals.

081 2 Unbalanced tires are likely to cause (1) the engine to seriously vibrate. (2) the car to pull to one side during braking. (3) nothing.

Comment : I’d bet on 3 (in reality, not in this test)

087 2 You should change the engine oil and the transmission fluid (1) when the engine is shut off and cold. (2) after you have started the vehicle and the engine is starting to warm up. (3) anytime, no matter whether the engine is hot or cold.

Comment : This implies you change fluids with the engine running, FFS

092 3 The differential in a front-wheel drive vehicle is located (1) behind the clutch. (2) at the rear end of the drive shaft. (3) inside the transmission.

Comment : 1 and 3

093 3 Which of the following is the main purpose served by rear axle ratio? (1) To make it easier to reduce speed. (2) To enable the left and right wheels to spin at different speeds when turning. (3) Both statements are correct.

Comment : Both statements are utter bollocks, as is the question

096 1 If you get grease on your tires, you should clean the grease off with (1) clean water. (2) regular gasoline. (3) diesel.

Comment : Good luck with that

108 3 Battery fluid consists of (1) pure sulfuric acid. (2) distilled water. (3) sulfuric acid mixed with distilled water.

Comment : Ambiguous: could be either 2 or 3. Stuff you buy labeled “battery fluid” is distilled water

127 2 If you remove the battery terminal cables when the engine is running, which of the following will burn out? (1) The battery. (2) Any electrical devices turned on at that time. (3) The ignition coil.

Comment : due to unfiltered voltage spikes from the alternator

128 1 A fuel injection engine is ignited by (1) spark plugs. (2) a glow plug. (3) high temperature self-combustion.

Comment : Should say “gasoline fuel injection engine”, to exclude diesels

132 1 If the alternator starts making a squeaking noise, (1) either the bearings are worn out or the front axle is bent. (2) there’s too much spring action in the carbon brush spring. (3) there’s not enough spring action in the carbon brush spring .

Comment : “Front axle” presumably is supposed to mean alternator rotor shaft here
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PostSubject: Re: Tchiwanese Motorcycle "Theory" Test   Fri Jun 12, 2015 7:50 pm

What a load of BS. Anyone who manages to pass such a test does so by luck.

RE 018 - they might be correct. I thought it was a front/back division, anyway.
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PostSubject: Re: Tchiwanese Motorcycle "Theory" Test   Sun Jun 14, 2015 4:43 am

Justwatching wrote:
What a load of BS. Anyone who manages to pass such a test does so by luck.

RE 018 - they might be correct. I thought it was a front/back division, anyway.

Think early systems might have been, but that seems more likely to lead to loss of control (if the fronts only are working) or disproportionately poorer braking performance (if the rear only are working).

I've twice spun FWD vehicles entering a downward curve too fast in wet conditions, which I THINK was caused by engine-braking of the front wheels only when I lifted off.

Normally I'm coasting going downhill (yes, I am the Automotive Antichrist) so this doesn't  happen.

Re the bullshit test, I'd misunderstood/been mis-informed. The "mechanical knowledge" test doesn't seem to be part of the motorcycle test, since I wasn't asked to do it when I sat the computer-based "theory" bit on Friday.

Dunno who its for but I'd guess maybe truck drivers.
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