Question
Which of the following input device is used for marking
attendance of employees/students in organizations/institutions and security purposes?Solution
The correct answer is C
A 150-metre train takes 6 seconds to cross a pole. If the same train takes 12 seconds to cross train 'C' that is travelling in opposite direction at 20 ...
A train can cross a pole in 6 seconds while it can cross a 240 metres long platform in 18 seconds. Find the time (in hours) taken by the train to cover ...
Train 'E' leaves at 9:00 PM on Wednesday from Kolkata station and reaches Bangalore station at 11:00 AM the next day, while train 'F' leaves at 8:30 PM ...
Two trains, A and B, cross each other in 30 seconds and 50 seconds respectively, when running in opposite and the same direction respectively. If the sp...
Train ‘A’ travelling with a speed of 72 km/h can cross a pole in 18 seconds. If the length of train ‘B’ is 60% less than that of train ‘A’ a...
A train moving at a speed of ‘x’ km/h crosses a signal post in 22 seconds and then passes a 300 metre long bridge in 40 seconds. Calculate the total...
Train ‘L’ is travelling with a speed of 90 km/hr and crosses a vertical pole in 4 seconds. Train ‘K’ is 60 metres longer than ‘L’ and trave...
Train A running with a sped of 126 km/h crosses a vertical pole in 22 seconds. Speed of train A is 6 m/s less than speed of train B, and length of train...
Two trains running on parallel track with lengths 140 m and 40 m respectively. When travelling in opposite directions they are observed to pass each oth...
A goods train leaves a station at a certain time and at a fixed speed. After 9 hours, an express train leaves the same station and moves in the same dir...
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