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A
The efficiency of hydraulic braking system is
A. about 90%
B. 60-80 %
C. 50-60 %
D.40-50 %
C
The SAE recommends an angle of _________ for cone clutches faced with leather asbestos or having cork inserts.
A. 7.5 degrees
B. 9.5 degrees
C. 12.5 degrees
D. 14.5 degrees
D
Why does a clutch creates noise?
A. Clutch release bearing is either dry or defective
B. Clutch spring is broken
C. Clutch is faulty
D. all of the above
D
what faults develop in the brakes?
A. brakes do not work properly
B. brakes do not disengage
C. brakes makes noise
D. all of the above
B
which of the following types of brakes are also changed while replacing brake lining?
A. brake shoes
B. shoe rivets
C. shoe spring
D. block brake
B
Power brakes require _________ power.
A. equal
B. less
C. more
D. pulsating
C
What type of oil used in the hydraulic system?
A. Engine oil
B. Gear oil
C. Brake oil
D. Clutch oil
B
The principal parts of a hydraulic brake system are the master cylinder and the
A. multi cylinder
B. wheel cylinder
C. brake wire
D. brake shoe
B
In the mechanical brake system the main function is of
A. spring
B. cam
C. shoe adjuster
D. shoe rivets
A
In the motor vehicles, there is a _________ in addition of foot brake
A. hand brake
B. hydraulic brake
C. mechanical brake
D. band brake
B
the breaking strength of oak tanned belting varies from 3 to more than
A. 5 ksi
B. 6 ksi
C. 7 ksi
D. 8 ks
C
if the ends are joined by wire lacing with machine the usual efficiency of joint is
A. 75 %
B. 85 %
C. 88 %
D. 100 %
A
The tension in the belt due to centrifugal force increases rapidly above
A. 2500 fpm
B. 3000 fpm
C. 3500 fpm
D. 4000 fpm
C
Experience suggest s that the most economical designs are obtained for a belt Speed of
A. 2000 to 3000 fpm
B. 3000 to 4000 fpm
C.4000 to 4500 fpm
D. 4000 to 4000 fpm
D
For leather belts recommended speed is
A. 2000 to 300 0 fpm
B. 4000 to 5000 fpm
C. 6000 to 7500 fpm
D. 7000 to 8000 fpm
B
for fabric belts recommended speed is
A. 2000 to 3000 fpm
B. 2000 and more fpm
C. 3000 to 4000 fpm
D. 4000 to 4500 fpm
D
on high speed centrifugal blowers, it has been observed that the arc of contact reduced from 180 degrees at rest to___ in motion
A. 90 deg
B.95 deg
C. 100 deg
D. 110 deg
B
the recommended initial tension of belt is
A. 75 lb/in of width
B. 71 lb/in of width
C. 73 lb/in of width
D. 80 lb/in of width
B
the recommended net belt pull for rubber belt is
A. 11.34 lb/ply per inch of width
B. 13.75 lb/ply per inch of width
C. 16.35 lb/ply per inch of width
D. 20.34 lb/ply per inch of width
B
if two intersecting shafts are to be belt connected how many guide pulley is used.
A. 1
B. 2
C. 3
D. 4