A. all four pairs are turning
B. three pairs turning and one pair sliding
C. two pairs turning and two pairs sliding
D. one pair turning and three pairs sliding
E. all four pairs sliding
A. wear is less
B. power absorbed is less
C. both wear and power absorbed are low
D. the pressure developed being high provides tight sealing
E. there is overall economy of initial cost, maintenance and operation
A. higher pair
B. lower pair
C. rolling pair
D. sliding pair
E. turning pair
A. Machines transmit mechanical work, whereas structures transmit forces
B. In machines, relative motion exists be-tween its members, whereas same does hot exist in case of structures
C. Machines modify movement and work, whereas structures modify forces
D. Efficiency of machines as well as structures is below 100%
E. Machines are run by electric motors, but structures are not
A. along the angular velocity
B. opposite to angular velocity
C. may be any one of these
D. perpendicular to angular velocity
E. none of the above
A. pitch circle
B. base circle
C. prime circle
D. outer circle
E. cam circle
A. along PO
B. perpendicular to PO
C. at 45° to PO
D. along OP
E. none of the above