LV13 Quiz 1

Which of the following is most likely cause of clutch drag?

• Minimal free play at the clutch pedal

• Excessively worn friction linings

• Contaminated release bearing

• Driven plate seized on splines

How many forward gears are provided by the gearbox shown?

• 6

• 5

• 4

• 3

No torque multiplication will occur if:

• two of the three members are locked together -  I would say it’s this one.

• two members are allowed to rotate freely

• annulus gear is held stationary and the sun gear is rotated

• planet carrier is held stationary and the sun gear is rotated

Which statement is FALSE regarding gear systems?

• Incorrect automatic transmission inhibitor switch can prevent a vehicle from starting

• Transmission slip will occur in a torque converter without the use of a stator

• Two epicyclic gear sets can produce three forward gears and one reverse

• Gear change points are determined in an ECAT system by mechanical pressure

What is ONE advantage of using a CVT transmission?

• It uses epicyclic gearing making it very compact

• It increases the complexity

• It offers 4, 5, or 6 possible gear ratios

• It offers an infinite number of possible gear ratios

What is ONE advantage of epicyclic gearing?

• It can achieve torque multiplication by use of a stator member

• It enables the use of a synchromesh gear mechanism

• It reduces the force applied to the release bearing

• It is very compact for a given torque multiplication

The picture shows a simple epicyclic gear train. Reverse drive will occur when:

• sun gear is held stationary and the annulus gear is rotated

• annulus gear is held stationary and the sun gear is rotated

• the planet carrier is held stationary and the sun gear is rotated

• two of the three members are locked together

A front wheel drive manual transmission has vibration at all vehicle speeds. The most likely fault is:

• a dry constant velocity joint

• air in the hydraulic clutch

• a bent drive shaft

• a worn layshaft bearing

A CVT transmission belt is:

• of steel construction and transmits the drive by tension

• of aluminum construction and inextensible

• inextensible and transmits drive by thrust

• extensible and transmits the drive by compression

What is the purpose of the grooves on the conical surface of a synchromesh baulk ring?

• To allow a smaller contact area and thereby reduce friction between surfaces

• To allow for better lubrication of the friction faces to prevent overheating

• To provide a rapid breakdown of the oil film and allow the cone faces to lock

• To prevent the engagement of more than one gear at a time