Transmission System MCQ Questions & Answers

41

Which of the following statement is correct with regard to a hydraulic control unit?

A) The various hydraulic signals are converted into electric signals and are used to operate each gear's magnet clutch so that gearshift operations can be performed B) The volume of fluid within the torque converter is adjusted so that the efficiency of transfer of engine power to the transmission can be controlled C) The unit's flow channels are switched in response to a number of different hydraulic signals so that the pressure directed to each of the gear's clutches be controlled and so that gearshift operation can be performed D) The hydraulic pressure which is applied to the gear unit is regulated to achieve the same effect as achieved by engagement and disengagement of the clutch in a manual transmission

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Answer & Solution

Answer: Option C

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42

The purpose of torque converter in automobile is

A) Automatically multiplying engine torque B) Automatically multiplying engine speed C) Automatically control the speed of engine D) Automatically multiplying vehicle torque

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Answer & Solution

Answer: Option A

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43

Torsional coil springs used in automotive clutch plate

A) Ensure smooth engagement of clutch assembly B) Damp engine torsional vibrations C) Are provided for applying axial force on the pressure plate D) Do not provide damping at all

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Answer & Solution

Answer: Option A

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44

The double declutching is used for the engagement of gears in

A) Sliding mesh transmission B) Constant mesh transmission C) Synchromesh transmission D) None of these

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Answer & Solution

Answer: Option B

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45

When the speed of governor increases, then

A) Height of governor and radius of rotation increase B) Height of governor and radius of rotation decrease C) Height of governor decreases but radius of rotation increases D) Height of governor increases but radius of rotation decreases

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Answer & Solution

Answer: Option C

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46

Double declutching is required in constant mesh transmission to

A) Equalize the speed of main shaft gear and the sliding dog B) Provide direct gear C) Equalize the speed of conutershaft gear and the sliding dog D) None of these

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Answer & Solution

Answer: Option A

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47

In a torque converter, when the speed ratio of the pump and turbine reaches the coupling point, then

A) The stator will begin to freewheel in the opposite direction to the pump and the turbine B) The stator will begin to freewheel in the same direction as the pump and the turbine C) The lock-up clutch will be engaged D) The pump and the turbine will be engaged in a mechanical fashion

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Answer & Solution

Answer: Option A

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48

The trouble noisy differential is due to-

A) Loose star pinion B) Wrong out hub bearing C) Both of them D) None of the above

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Answer & Solution

Answer: Option C

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49

Following is the data for transmission system of a Gear box reduction ratios.
1^st gear - 4.3 : 1
2^nd gear - 3.00 : 1
3^rd gear - 2.71 : 1
4^th gear - 1 : 1
Final drive reduction is 5.0 : 1
The overall reduction when the vehicle is driven in 2^nd gear is

A) 3.00 : 1 B) 13.55 : 1 C) 5 : 1 D) 15 : 1

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Answer & Solution

Answer: Option D

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50

The constant velocity joint with two cross and yoke V-joints mounted back to back with a linking yoke and a centering ball is called as

A) Final drive B) Double carbon C) Both A and B D) None of these

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Answer & Solution

Answer: Option B

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Transmission System MCQ Questions & Answers | Automobile Engineering