Related Questions

Hybrid rocket engines are also called as ________ propellant rocket engines.
“C25” Indias first indigenously developed high thrust cryogenic rocket engine has successfully ground-tested by the ISRO for which rocket vehicle?
For pressurizing cryogenic propellant tanks, the amount of gas required is _________ compared to an equivalent tank containing a non-cryogenic propellant.
In cryogenic rocket engines use oxidizer as fuel.
_________ initiators are used in cryogenic rocket engines.
Directions : Following question consists of a statement followed by three arguments I, II and III . You have to decide which of the arguments is a STRONG arguments and which is a WEAK Argument.

Statement : Should coal engines be replaced by electric engines in trains?

Arguments :
I. Yes. Coal engines cause a lot of pollution.
II. Yes. Electric engines are good on performance, easy to operate and low on maintenance.
III. No. India does not produce enough electricity to fulfil its domestic needs also.
If 6 engines consume 24 metric tonnes of coal, when each is working 8 hours day, how much coal will be required for 9 engines, each running 13hours a day, it being given that 2 engines of former type consume as much as 3 engines of latter type ?
If 5 engines consume 6 metric tonnes of coal when each is running 9 hours a day, how many metric tonnes of coal will be needed for 8 engines, each running 10 hours a day, it begin given that 3 engines of the former type consume as much as 4 engines of the latter type ?
In a engineering, test, a rocket sled is propelled into a target. If the sled's distance d in meters from the target is given by the fomula d = - 1.5 t2+120, where t is the number of seconds after rocket ignition, then how many seconds have passed since rocket ignition when the sled is 10 meters from the target?
If the exit pressure is thrice the atmospheric pressure for a rocket A and if it is twice for rocket B, what will be the ratio of pressure thrust of rocket A to that of B?