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Start learning 50% faster. Sign in nowA microphone converts sound energy to electrical energy this energy level is used as an output using same energy level, amplified or it could be used to record those same energy output and pattern too be played again. Sound 'waves strike a plastic or thin metal diaphragm, causing in to move an attached coil within a strong magnetic field. The induced current duplicates the frequency of the sound wave.
A train travelling with a speed of 54 km/h can cross a pole in 6 seconds. Find the time taken by the train to cross a 210 metres long platform if the sp...
A train travelling at the speed of 72 km/hr crosses another train, having 40 meters less length and travelling in opposite direction at the speed of 54 ...
A train 200 m long running at 54 km/hr takes 40 seconds to cross a bridge. The length of the bridge is
The question contains a statement followed by Quantity I and II. Read the information clearly and answer your questions accordingly.
Quanti...
Two trains approach each other at 15 kmph and 25 kmph from 2 places 280 km apart. After how many hours they will meet?
A train passes 150 m long platform in 10 seconds and a man standing on the platform in 8 seconds. Find the speed of the train?
Two trains of same length are running in parallel tracks in the same direction with speed 64 km/hr and 100 km/hr respectively. The latter completely cro...
A boy is cycling at 10 m/sec in the same direction of a train. The train crosses him in 5 seconds. If speed of the train is 90 km/hr, find the time take...
Car 'X' travels for 4 hours to reach from point A to B. Car 'Y' travels 210 km to reach from point B to C in 3 hours. Distance travelled by car 'X' to c...
Train ‘A’ running with a speed of 108 km/hr crosses a vertical pole in 16 seconds. Find the approx. time taken by the train ‘A’ ...
