25) In spot welding, recommended minimum distance between the nearest edge of the plate and centre of spot weld of diameter 'd' should be equal to

26) Ram needs to cover a distance of 570 km in 10 hours. If he drives his car with a speed of 55 km/hr for the first 6 hours, what should be his speed later?

27) As per Indian standard specifications, 100 H6g5 means that

28) A square plate of side 40 cm is cut into a circular shape of diameter 40 cm. The percentage of material wasted is

29) In _____ projection, the projectors are perpendicular to the plane of projection