135) When one of the links of a kinematic chain is fixed, the chain is known as a

136) When brakes are applied to all the four wheels of a moving car, the distance travelled by the car before it is brought to rest, will be

137) In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

138) The controlling force diagram for a spring controlled governor is a curve passing through the origin.

139) The lower pairs are __________ pairs.