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A rocket works with maximum overall efficiency when air craft velocity is equal to the

A rocket works with maximum overall efficiency when air craft velocity is equal to the Correct Answer Half the jet velocity

A rocket works with maximum overall efficiency when air craft velocity is equal to the half the jet velocity

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In the question below is given a statement numbered I, II and III. An assumption is something supposed or taken for granted. You have to consider the following assumption and decide which of the assumption is implicit in the statement. Statement: Summer is slowly fading away, but the sales of super premium and craft beers continue to sizzle. And now the FIFA World Cup football in Russia, as many football fans head out to the pubs every evening to watch matches, is adding some more fizz to the market. For young millennials, especially in Indian metros, it’s also time to seek out new craft and super-premium beers. According to a report by Euromonitor International last year, there is likely to be a further rise of craft beers in India this year. The report says that the huge success of B9 Beverages’ Bira 91 is expected to further encourage many global players to introduce their own craft beers.  Assumptions: I. Additionally, with this category being largely underdeveloped, many new players are also expected to emerge.  II. Likewise, a recent report by BMI Research of Business Monitor International, too, sees a strong growth for the beer market in India in 2018 on the back of changing cultural attitudes and a young, increasingly affluent population, demand for premium and craft beers is rapidly emerging. III. With growth in demand from Indian beer connoisseurs, who don’t mind paying a premium, it’s no surprise that importers and local brewers have launched over 20 new and fresh flavours this summer, including niche craft beers produced in small breweries.
The formula to determine the height of the rocket above the ground at any time during the rocket's flight is given by: h = 119t - 7t2 where t = the time, in seconds, that has elapsed since the rocket was launched, and h = the height, in meters, of the rocket above the ground at time t. The value of h was 0 when the rocket hit the ground. How many seconds after the rocket was launched did it hit the ground?
Pavan and Sravan are two persons. If Pavan works with his actual efficiency and Sravan twice of his actual efficiency then it takes 25 days to complete the work. But If Pavan works twice of his actual efficiency and Sravan with his normal efficiency then the work is completed in 20 days. How many days would it take if Sravan alone works with his actual efficiency (in Days)?
A works twice as fast as B. B works twice as fast as C. A works 16 times as his efficiency and completes the whole in 12 days, how many days would be required for B and C together if B works 32 times of his efficiency and C with 64 times of his efficiency to complete the same job?
In the following question, five statements are given followed by four conclusions I, II, III and IV. You have to consider the given statements to be true even, if they seem to be at variance with commonly known facts. Read all the conclusions and decide which of the following logically follows from the given statements disregarding the commonly known facts. Statements: Some Blue are Color. All Color are Sky. No Rocket is Sky. All Rocket are Space. No Space is Color. Conclusions: I. Some Sky being Space is a possibility. II. Some Blue are Sky. III. Some Color being Rocket is a possibility. IV. Some Blue being Rocket, Space, Sky and Color is a possibility.
In the question, the first and last sentences of the passage are numbered 1 and 6. The rest of the passage is split into four parts and named P, Q, R, and S. These four parts are not given in their proper order. Read the sentence and find out which of the four combinations is correct. S1: When a satellite is launched, the rocket begins by going slowly upwards through the air. P: However, the higher it goes, the less air it meets. Q: As the rocket goes higher, it travels faster. R: For the atmosphere becomes thinner. S: As a result, there is less friction. S6: Consequently, the rocket still does not become too hot. The Proper sequence should be:
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: However, the higher it goes, the less air it meets. B: When a satellite is launched, the rocket begins by going slowly upwards through the air, as the rocket goes higher, it travels faster. C: For the atmosphere becomes thinner resulting in less fristing. D: Consequently, the rocket still does not become too hot.
S1:When a satellite is launched, the rocket begins by going slowly upwards through the air.
P :However, the higher it goes, the less air it meets.
Q :As the rocket goes higher, it travels faster.
R :For the atmosphere becomes thinner.
S :As a result there is less friction.
S6:Consequently, the rocket still does not become too hot.

The Proper sequence should be:
For a rocket having 95% combustion efficiency, total chemical power of 17MW, a mass flow rate of propellants of 15 kg/s, and effective jet exhaust velocity of 1443 m/s, find the internal efficiency of rocket propulsion.
A rocket is launched to travel vertically upward with a constant velocity of 20 m/s. After travelling for 35 seconds, the rocket develops a snag and its fuel supply is cut off. The rocket then travels like a free body. The height achieved by it is