156) When a mechanism is required to transmit power or to do some particular type of work, then it becomes a machine.

157) The transmissibility, for all values of damping factor, will be less than unity, if ?/?_n is

158) Which of the following is used to control the speed variations of the engine caused by the fluctuations of the engine turning moment?

159) The ratio of driving tensions for rope drive is same as that of V-belt drive.

160) A Hartnell governor is a