md2.2

50問 • 2年前

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The part of the total frictional energy that is stored in the brake parts, principally in the drum or disk has been variously estimated at,

B. 75% up

Fiction devices used to regulate the motion of bodies and with clutches.

B. Brakes

The frictional forces depends on coefficient of friction and

B. normal force

A shaft is used to connect or disconnect at will is caller

C. clutch

The brake lining operating at temperature mixtures containing ceramics are used.

C. 750 °F to 1000°F

if the band wraps partly around the brake wheel or drum and brake action is obtained by pulling the band tight onto the wheel. This type of brake is known as

B. band brake

the brake capacity to absorb energy is known as

A.braking torque

The part of an automobile disc clutch that presses against the flywheel is referred to as

C. pressure plate

Hydrodynamic brakes is the major type of

C. fluid brake

Sues of brakes that is capable otarting ins the motion of, machine member as wel as relarding is moton shit,

D. Mechanical brake

It is considered as the simplest type of mechanical brake.

D. Band brake

The friction devices used to connect shafts.

B. Clutches

A clutch that has a disadvantage of heavier rotary masses is known as

B. Multiple disc clutch

• In motor vehicles, it is very common practice to use a

D. single plate clutch

Clutch, gear box, differential etc. are the parts of

D. transmission system

The overrunning clutch

D. all of the above

The overrunning clutch

A. can not be lubricated

The efficiency of hydraulic braking system is

A. about 90 percent

Due to air effect, the hydraulic brakes become

B. ineffective

The lining of a brake shoe

A. can be changed

A hydraulic clutch doesn't incorporate a

A. clutch plate

The clutch finger is pushed by

A. clutch bearing

Which of the following types of brakes are also change while replacing brake lining?

C. Shoe rivets

What faults develop in the brakes?

D. All of the above

Why clutch creates noise?

D. All of the above

The SAE recommends an angle of for cone clutches faced with leather or asbestos or having cork inserts.

C. 12.5°

Power brakes require, power.

B. less

In motor vehicles, there is a, brake. in addition of foot

B. hand brake

In the mechanical brake system the main function is of

A. cam

The principal parts of a hydraulic brake system are master cylinder and

D. wheel cylinder

What type of ol is used in the hydraulic brake system?

A. Brake oil

Inside the clutch is mounted.

D. gear box propeller shaft

Hydraulic clutches are used in vehicles.

C. costly

There are plates in a multi plate clutch.

C. more than one

which of the following is used in the suspension system?

D. Shock absorbers

Suitable for mine hoists and other services where heavy loads are accompanied by severe shock.

Band clutch

If the angle of contact is, the pressure between the brakes shoe and the drum can not be considered uniform

B. greater than 60 deg

The practical length of shoe is limited to about

C. 120°

Refers to the simplest type of all brakes

A. Band brakes

for overload protection of motors and engine. sup Used to protect a machors and engine." jamming aig

D. Slip clutch

Clutches which are designed to tranamit torque for one direction of rotation of the driver and then. free-wheel or transmit essentially no torque when the direction of the driver rotation is reversed.

B. Overrunning clutches

Type of brake under the category of power brake is known as

D. servo brake

The effectiveness of the brake may greatly decrease shortly after it begins to act continuously, a phenomenon called

B. fade

is. Supplementary Question It is used to stop the motion of a moving object.

C. Brakes

The most common defects of clutch:

D. all of the above

The maintenance of mechanical brake is

B.economical

friction of the shoe. This fault is known as When the vehicle runs brake dunown comes hot becaus of

C. brake winding

The reasons for noise at the time of engaging brake:

D. all of the above

The act of keeping some pressure on the clutch pedal at the time of driving is known as

B. riding on clutch

The short comings in the cone clutch because of which it is not used

D. all of the above

machine design 2

ユーザ名非公開 · 5問 · 2年前

machine design 2