Deck 71: Manual Transmission Fundamentals

Question 1

When a vehicle is operated in high gear, the engine's crankshaft turns approximately three times to one turn of the transmission output shaft.

Answer 1

False

Question 2

The effective diameter of the meshed gear (used for determining its circumference) is called the ____.

A)pitch diameter
B)pitch radius
C)helical gear
D)synchronizer

Answer 2

A

Question 3

An automatic transmission is used with a clutch.

Answer 3

False

Question 4

A(n) ____________________ allows the driver to adjust torque to fit an engine's operating requirements.

Question 5

Some trucks have a four-speed transmission with a very low first gear, sometimes called a(n) ____________________.

Question 6

The ____________________ is the distance from the center of a gear to its outside edge.

Question 7

While having a discussion, Technician A says that twenty pounds of force applied to the end of a 1-foot rod produces 10 foot-pounds of torque. Technician B says that it produces 200 foot-pounds of torque. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 8

All of the followings statements are true EXCEPT:

A)a front bearing retainer holds the input shaft bearing against the case.
B)shift linkage moves shift forks to select the gear range.
C)forward gears have a synchronizer, sometimes called a synchro, that prevents two meshing gears from clashing during a shift.
D)power flows from the input shaft to the clutch disc.

Question 9

Which of the following statements is LEAST-Likely true?

A)In a transmission, bearings support the ends of almost all rotating parts.
B)The input shaft is usually a single part made up of a series of gears that mesh with the various gears on the mainshaft.
C)Bearings allow parts to rotate with very little friction.
D)Different parts of the geartrain are commonly called "shafts."

Question 10

Which of the following is LEAST-Likely a component of a typical internal shift mechanism?

A)Spring
B)Cylinder
C)Notch
D)Ball socket

Question 11

Most automatic transmissions achieve ____ with planetary gears and a lock-up torque converter.

A)wide radio transmission
B)gear ratio
C)overdrive
D)countergear

Question 12

While having a discussion, Technician A says that the synchro allows two gears spinning at different speeds to mesh without clashing. Technician B says that it blocks the shift and equalizes the speed between two moving gears using cone clutch action. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 13

A(n) ____________________ can be calculated by dividing the number of teeth on the driven gear by the number of teeth on the driving gear.

Question 14

When the driving gear is smaller than the driven gear, this decreases output speed and increases output torque.

Question 15

The synchronizer, or synchro, allows two gears spinning at different speeds to mesh without clashing.

Question 16

All of the following statements are true EXCEPT:

A)shift forks fit into grooves cut in the outside of the synchro collar.
B)gear changes are made using shift linkage or cables.
C)spring tension holds the detent balls into the detent notches in the shift rail.
D)an interlock mechanism holds the transmission in gear.

Question 17

The term MOST-likely used to describe the clearance between meshing gear teeth is:

A)backlash
B)dummy shaft
C)spur gears
D)overdrive

Question 18

The ____________________ is the ratio between the transmission output shaft and the differential ring gear.

Question 19

A four-stroke engine produces equal torque at all times.

Question 20

The term MOST-Likely used to describe simple gears with straight-cut teeth is:

A)idler gears
B)lower gears
C)spur gears
D)high gears

Question 21

What is the difference between third gear and second gear?

Question 22

What is the relationship between backlash and helical gears?

Question 23

What is the difference between first gear and reverse?

Question 24

Briefly describe the power flow of high gear.

Question 25

What are the approximate transmission gear ratios for a three-speed transmission?