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Statement (I) : Mass flow through the convergent nozzle is maximum when the exit Mach number is 1. Statement (II) : The divergent section is added to convergent nozzle to increase the exit Mach number and not to increase the mass flow rate
A train approaches a tunnel XY. There is a dog located inside the tunnel at a point that is 3/8 of the distance XY measured from the entrance X. When the train whistles the dog gets scared and runs. If the dog moves towards the entrance of tunnel X, the train catches the dog exactly at the entrance of the tunnel. If the dog moves to exit Y, the train catches the dog at exactly the exit. Find the ratio of the speed of dog and train.
A truck approaches a tunnel inside a tunnel a rat is sitting at a point which is 4/9th of the distance of the tunnels measured from the entrance. When the truck horns the rat moves towards the entrance and truck catches the rat at the entrance and if the rat runs towards the exit then also truck catch the rat at the exit. The speed of truck is how much times the speed of rat?
A train approaches a tunnel AB. Inside the tunnel is a cat located at a point that is $$\frac{3}{8}$$ of the distance AB measured from the entrance A. When the train whistles, that cat runs. If the cat moves to the entrance A of the tunnel, the train catches the cat exactly at the entrance. If the cat moves to the exit B, the train catches the cat at exactly the exit. The ratio of the speed of the train to that of the cat is of the order :
Nitrogen gas flows into a convergent nozzle at 200 kPa, 400 K and very low velocity. It flows out of the nozzle at 100 kPa, 330 K. If the nozzle is insulated find the exit velocity.
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 admission to all professional courses be made on the basis of past academic performance rather than through entrance tests? Arguments : I. Yes. It will be beneficial for those candidates who are unable to bear the expenses of entrance tests. II. Yes. Many deserving candidates securing high marks in their qualifying academic examinations do not perform well on such entrance tests. III. No. The standard of examinations and assessment conducted by different Boards and universities are not comparable and hence there is a need to conduct entrance tests to calibrate them on a common yardstick.
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 admission to all professional courses be made on the basis of past academic performance rather than through entrance tests?

Arguments :
I. Yes. It will be beneficial for those candidates who are unable to bear the expenses of entrance tests.
II. Yes. Many deserving candidates securing high marks in their qualifying academic examinations do not perform well on such entrance tests.
III. No. The standard of examinations and assessment conducted by different Boards and universities are not comparable and hence there is a need to conduct entrance tests to calibrate them on a common yardstick.
If stop is called start, start is called begin, begin is called enter, enter is called exit, exit is called outlet and outlet is called door, then what is the code for ‘opposite of exit’?
When the cross-section of a nozzle increases continuously from entrance to exit, it is called a
When the cross-section of a nozzle increases continuously from entrance to exit, it is called a ____________