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When we compare the half bridge converter and full bridge converter 1. The maximum collector current of a full bridge is only double that of the half bridge 2. Full bridge uses 4-power switches instead of 2, as in the double bridge. 3. Output power of a full bridge is twice that of a half bridge with the same input voltage and current. When of the above statements are correct?
Four friends A, B, C and D need to cross a bridge. A maximum two persons can cross it at a time. It is night and they just have one lamp. Persons that cross the bridge must carry the lamp to find the way. A pair must walk together at the speed of slower person. After crossing the bridge, the person having faster speed in the pair will return with the lamp each time to accompany another person in the group. Finally, the lamp has to be returned at the original place and the person who returns the lamp has to cross the bridge again without lamp. To cross the bridge, the time taken by them is as follows: A :1 minute, B : 2 minutes, C : 7 minutes and D : 10 minutes. What is the total minimum time required by all the friends to cross the bridge?
A boat is on the one side of a bridge and the other boat is on the other side of the bridge. The bridge is 36 meter above the river surface. The angles of depression of both the boats from the bridge point on the bridge are complementary to each other and the angle of depression of first boat from the bridge is tan-1(1/3), then what is the distance between both the boats?
A cow was standing on a bridge, 5m away from the middle of the bridge. A train was coming towards the bridge from the ends nearest to the cow. Seeing this cow ran towards the the train and managed to escape when the train was 2m away from bridge. If it had run in the opposite direction, it would hit by the train 2m before the end of the bridge. What is the lenght of the bridge in meters assuming the speed of the train is 4 times that of cow ?
The accompanying image shows a large cube made of dark and white small sugar cubes. Small cubes of the diagonally arranged row of the bottom surface of the large cube, small cubes of the row with one face on the right-hand surface of the large cube, small cubes of the row with one face on the front surface of the large cube, and small cubes of the column with one face on the top of large cube surface are all dark. Select the number of small white cubes of the large cube.
E and F are instructed to construct a bridge. E alone can construct the bridge in 100 days. If E and F work together, they can complete the bridge in 60 days. In how many days can F alone construct the bridge? 
Match List I (Bridges) with List – II (Quantity measured) and select the correct answer using the codes given below the lists: List - I List - II A. Anderson Bridge i. Frequency B. Kelvin Double Bridge ii. Resistance C. Schering Bridge iii. Inductance D. Wien Bridge iv. Capacitance
Four friends A, B, C and D need to cross a bridge in the night. A maximum of 2 people can cross at a time. They have only one lamp. A takes one minute to cross the bridge. B takes 2 minutes, C takes 8 minutes and D takes 11 minutes to cross the bridge respectively. A pair must walk together at the speed of the person who walks slowly. What is the minimum time required to cross the bridge by all four people? 
A local train of length 250 m should cover a distance of 100 km. There is a bridge of length ‘x’ in the journey where the maximum speed should not exceed 25 km/hr.The train used to go at a speed of 75km/hr at other places and 15 km/hr on the bridge. Due to fog, one day its speed reduced by 15 km/hr in other places. Even by travelling at 80% of the maximum speed on the bridge, it was 25 min late. How much time will the train take to cross the bridge usually (in minutes)?
A balloon is directly above one end of a bridge. The angle of depression of the other end of the bridge form the balloon is 48°. If the height of the balloon above the bridge is 122 m, then what is the length of the bridge?