A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm²), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is 30 N 40 N 35 N 25 N TRUE ANSWER : ? YOUR ANSWER : ?
The maximum bending moment for a simply supported beam with a uniformly distributed load w/unit length, is WI/2 WI²/4 WI²/12 WI²/8 TRUE ANSWER : ? YOUR ANSWER : ?
If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following: Q = S + F Q = F – S Q = S – F Q = S × F TRUE ANSWER : ? YOUR ANSWER : ?
A masonry dam (density = 20,000 N/m³) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be 750 N/m² 75000 N/m² 7500 N/m² 75 N/m² TRUE ANSWER : ? YOUR ANSWER : ?
For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is 0.707 0.505 0.303 0.404 TRUE ANSWER : ? YOUR ANSWER : ?
The equivalent length is of a column of length having both the ends fixed, is L/2 L 2 L l TRUE ANSWER : ? YOUR ANSWER : ?
A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is [W (2 + f/G)]/A [W (2 + g/f)]/A [W (1 + f/ G)]/ A (1 – g/f)/A TRUE ANSWER : ? YOUR ANSWER : ?
The moment of inertia of a triangular section (height h, base b) about its base, is bh²/12 b²h/12 b³h/12 bh³/12 TRUE ANSWER : ? YOUR ANSWER : ?
A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm² is: 4.5 mm 5.5 mm 4.0 mm 5.0 mm TRUE ANSWER : ? YOUR ANSWER : ?
The greatest load which a spring can carry without getting permanently distorted, is called Proof stress Proof load Proof resilience Stiffness TRUE ANSWER : ? YOUR ANSWER : ?