Question
Which of the following is used to convert digital
signals to analog signals?Solution
Explanation: A modem (modulator-demodulator) converts digital signals from a computer into analog signals for transmission over telephone lines and vice versa.
Person 'A' begins a journey from Punjab to Delhi, driving initially at 120 km/hr. Every 36 minutes, he reduces his driving speed by 5 km/hr. If the dist...
Peter, John and Mike run around a Circular track starting from the same point simultaneously and in the same direction at the speed of 36 kmph, 54 kmph ...
A police man goes after a thief who has 100m start. If the policeman runs a KM in 8 min and the thief runs a km in 10 min, how far will the thief have g...
A traveler needs to cover 220 km, with the first 15% at 40 kmph, 3/4 of the distance at 45 kmph, and the rest at 30 kmph. Find the average speed over th...
βIβ and βJβ started moving towards each other at the same time with a speed of 35 km/hr and 25 km/hr, respectively. If the distance covered by οΏ½...
Three people β Rohan, Suresh, and Tarun β run at speeds in the ratio 5:4:6. If Tarun takes 18 minutes to finish a race, how long will Rohan take to ...
A boy cycles to his school at 40 km/h and comes back at 30 km/h. If the total time for going and coming back is 210 minutes, find the distance between h...
Average speed of βAβ during a 24-hour journey is 35 km/h. If he covered the first 120 km of his journey at a speed of 20 km/h, then find the speed a...
Ravi travels from point βPβ to point βQβ. If he drives at 72 km/h, he reaches 40 minutes early. If he drives at 48 km/h, he reaches 50 minutes l...
A thief and a policeman are 80 km apart. The thief is traveling at a speed of 48 km/h, while the policeman is moving at 80 km/h. How far will the police...
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