(ω₁ + ω₂)/y
(ω₁ + ω₂) y
(ω₁ × ω₂) y
(ω₁/ω₂) y

## Theory of Machine Which of the following is a spring controlled governor?

Hartnell governor
Hartung governor
Wilson-Hartnell governor
All of these

## Theory of Machine To obviate axial thrust, following gear drive is used

Single helical gear in which one of the teeth of helix angle a is more
Double helical gears having identical teeth
Double helical gears having opposite teeth
Mutter gears

None of these
Circular
Reciprocating
Tangent

## Theory of Machine A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

P = W (sin α + μ cos α)
P = W tan α
P = W (cos α + μ sin α)
P = W tan (α + φ)

## Theory of Machine The relation between number of links (l) and number of joints (j) in a kinematic chain is

l = (3/4).(j + 3)
l = (1/2).(j + 2)
l = (2/3).(j + 2)
l = j + 4