A machine punching 38 mm holes in 32 mm thick plate requires 7 N-m of energy per sq. mm of sheared area, find the maximum shear force required.

Related MCQs

• The maximum shear force required for punching depends on                  
• Calculate the work done per minute by a punch tool making 20 working strokes per min when a 30 mm diametre hole is punched in 5 mm thick plate with ultimate shear strength og 450 Mpa in each stroke.
• In a punching press, load is 0 at the time of punching.
• Energy during actual punching operation is same as the energy supplied by the motor.
• The balance energy required for punching is supplied by the flywheel by                  
• When a periodic disturbing force is applied to a machine, the force is transmitted to the foundation by the means of spring.
• In a punching press, which of the following quantity is constant?
• Power is transmitted by an electric motor to a machine by using a belt drive. The tensions on the tight and slack side of the belt are 2200 N and 1000 N respectively and diameter of the pulley is 600 mm. If speed of the motor is 1500 r.p.m, find the power transmitted.
• Inertia force and the reversed effective force are the same.
• For the given data of an Internal combustion engine : Mass of parts = 180 kg bore = 175 mm, length of stroke = 200 mm, engine speed = 500 r.p.m., length of connecting rod = 400 mm and crank angle = 60° from T.D.C, find the inertia force.