** Question No : 1**

The type of gears used to connect two non parallel and non intersecting shafts is

Spur gear

Helical gear

Bevel gear

Spiral gear

** Question No : 2**

The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

m.ω².r sinθ

m.ω².r cosθ

m.ω².r (sin 2θ/n)

m.ω².r (cos 2θ/n)

** Question No : 3**

In order to double the period of a simple pendulum, the length of the string should be

Halved

Doubled

Quadrupled

None of these

** Question No : 4**

In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

Equal to

Directly proportional to

Inversely proportional to

Independent of

** Question No : 5**

The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve)

m/(m + M)

M/(m + M)

(m + M)/m

(m + M)/M

** Question No : 6**

Which of the following mechanism is an approximate straight line motion mechanism?

Watt's mechanism

Grasshopper mechanism

Robert's mechanism

All of these

** Question No : 7**

The height of a Watt's governor is

Directly proportional to speed

Directly proportional to (speed)²

Inversely proportional to speed

Inversely proportional to (speed)²