For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed________?

Pick up wrong statement about friction force for dry surfaces. Friction force is________?

The various stages occuring in GPS system are described below?

What is the type of annuity where the first payment does not begin until some later date in the cash flow?

The type of bearing plate used in all joints and on curves to give better bearing area to the rails is________?

The recommended grade of tar for grouting purpose is________?