Machine Design
Pitch point of a cam is

Any point on the pitch circle
A point on the pitch curve having maximum pressure angle
Any point on the pitch curve
A point on the pitch curve having minimum pressure angle

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Which of the following statement is correct regarding power screws?

If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50%
Both (A) and (B)
The efficiency of a self locking screw can not be more than 50%
The efficiency of Acme (trapezoidal) thread is less than that of a square thread

ANSWER DOWNLOAD EXAMIANS APP