۸ 00000AU301121902 Pages: 2

Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
Fifth semester B.Tech degree examinations (S) September 2020

Course Code: AU 301
Course Name: AUTO TRANSMISSION
Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any three full questions, each carries 10 marks. Marks

1 ച What do you mean by the torque capacity of an automotive clutch? What are the (5)
major factors affecting the same?
b) Explain the constructional details and working of an electromagnetic clutch. (5)
2 93) Give acomparison of a Diaphragm spring and coil spring clutch. (4)
b) Explain the constructional details and working of a multi-plate diaphragm (6)
clutch.
3 a) What are the advantages of a synchromesh gear box? (3)
b) Explain the working principle of a synchromesh gear box with suitable sketches. (7)
4 What is the purpose of a transfer gearbox? Explain the constructional details ofa (10)
transfer gear box with high and low gear outputs.
PART ‏تا‎
‎Answer any three full questions, each carries 10 marks.
5 ച _ Discuss the advantages and limitations of hydrodynamic drives. (4)
b) Explain the constructional details and working of a four element torque (6)
converter.
6 9) What is the significance of rotary flow and vortex flow of fluid inside a torque (4)
converter?
b) Explain the working of a Lock-up torque converter. (6)
7 ஐ Explain the principle of operation of planetary gear system. What are the (4)
advantages of using planetary gear system?
0) What are the laws of planetary gear system? Explain the law of neutral, reverse (6)
and overdrive.
8 Explain the different mode of operation in a Simpson gearbox with a suitable (10)

sketch.