l - 2

l - 1

l

l + 1

C. l

Lower pair

Higher pair

Turning pair

Sliding pair

18

20

30

34

5,367 r.p.m.

6,000 r.p.m.

9,360 r.p.m.

12,000 r.p.m.

(1/2). μ W (r₁ + r₂)

(2/3). μ W (r₁ + r₂)

(1/2). μ W [(r₁³ - r₂³)/(r₁² - r₂²)]

(2/3). μ W [(r₁³ - r₂³)/(r₁² - r₂²)]

Equal to velocity ratio of a gear train

Reciprocal of velocity ratio of a gear train

Always greater than unity

Always less than unity

10° to 20°

20° to 30°

30° to 40°

60° to 80°

Bulky

Wears rapidly

Difficult to manufacture

Both (A) and (B) above

Decreases linearly with time

Increases linearly with time

Decreases exponentially with time

Increases exponentially with time

There is a reduction in amplitude after every cycle of vibration

No external force acts on a body, after giving it an initial displacement

A body vibrates under the influence of external force

None of the above

On their point of contact

At the centre of curvature

At the centre of circle

At the pin joint

Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link

Along the centripetal acceleration

Along tangential acceleration

Along perpendicular to angular velocity

Broken belt

Broken belt and its adjacent belts

All the belts

There is no need of changing any one as remaining belts can take care of transmission of load

Halved

Doubled

Quadrupled

None of these

D/T

T/D

2D/T

2T/D

Magnitude of the forces on journal

Angular velocity of journal

Clearance between journal and bearing

Radius of journal

No acceleration

Only linear acceleration

Only angular acceleration

Both linear and angular acceleration

ω √(x² - r²)

ω √(r² - x²)

ω² √(x² - r²)

ω² √(r² - x²)

Watt governor

Porter governor

Hartnell governor

None of these

Between I₁, and I₂ but nearer I₁

Between I₁, and I₂ but nearer to I₂

Exactly in the middle of the shaft

Nearer to I₁ but outside

Infinity

Zero

Any +ve value

Any -ve value

Governor A is more sensitive than governor B

Governor B is more sensitive than governor A

Both governors A and B are equally sensitive

None of the above

Machine

Structure

Mechanism

Inversion

Pendulum type governor

Dead weight governor

Spring loaded governor

Inertia governor

0.2

0.4

0.6

0.8

Below the critical speed

Near the critical speed

Above the critical speed

None of these

0° and 90°

180° and 360°

Both (A) and (B)

None of these

Pressure angle

Circular pitch

Diametral pitch

Pitch circle diameter

Two elements held together mechanically

Two elements having relative motion

Two elements having Coriolis component

Minimum of two instantaneous centres

Slider crank mechanism

Kinematic chain

Five link mechanism

Roller cam mechanism

One

Two

Four

Six