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| Mcq on impact of jets |
Objective questions MCQ on impact of jets is as follows:-
a) mass
b) Volume
c) Work
d) Velocity
Answer:- C
2. Which is not a type of jet engines.
a) Turbo jetb) Ram jet
c) Scram jet
d) Propulsive jet
Answer:- D
3. The turbojet does not consist of.....
a) Compressor partsb) Combustion chamber part
c) Gas turbine part
d) Air filter part
Answer:- D
4. Which of the following part consists in turbojet engine.
a) Compressor parts
b) Combustion chamber part
c) Gas turbine part
d) All of the above
b) Combustion chamber part
c) Gas turbine part
d) All of the above
Answer:- D
5. The Jet propulsion of ship in that shallow water is needs to avoid damage of the propeller.
A. True
B. False
Answer:- A
6. The Jet propulsion of ship is less efficient than the screw propeller.
A. True
B. False
Answer:- A
7. The main reason for more efficiency of screw propeller is due to.......
a) Pressureb) Temperature
c) Frictional losses
d) Wear and tear
Answer:- C
8. The jet strikes for a curved plate at position of the....
a) Sidesb) Surface
c) Centre
d) Does not strike
Answer:- C
9. The efficiency of vane is........
a) 1-V22/ V12b) 1+(V22/ V12)
c) V22/ V12
d) 1+ V12
Answer:- A
10. The strikes of jet for curved plate at its centre of plates.
A. True
B. False
Answer:- A
11. The pressure are constant in jet then velocity is...
a) Vr1 < Vr2b) Vr1 = Vr2
c) Vr1 > Vr2
d) Vr2 is a zero
Answer:- B
12. For the frictionless flow from jet, velocities are...
a) Vr1 < Vr2
b) Vr1 = Vr2
c) Vr1 > Vr2
d) Vr2 is a zero
b) Vr1 = Vr2
c) Vr1 > Vr2
d) Vr2 is a zero
Answer:- B
13. The relative velocity is calculated by using which of the following equations.
a) u – V1b) V1
c) u/V1
d) u×V1
Answer:- A
14. How is absolute velocity at inlet denoting 8n jet propulsion.
a) Vb) V1
c) C
d) v
Answer:- B
15. The working principle of Jet propulsion on which of the following in law.
a) Newton’s 1st lawb) Newton’s 2nd law
c) Newton’s 3rd law
d) Thermodynamic properties
Answer:- C
16. The Newton third law gives principle of jet propulsion.
A. True
B. False
Answer:- A
17. The force analysis on the curved vane is getting by....
a) Velocity trianglesb) Angle of plate
c) Vane angles
d) Plate size
Answer:- A
18. The propulsive force driving the jet in....
a) Backward directionb) Forward direction
c) Perpendicular direction
d) Parallel movement
Answer:- B
19. The force exerted by jet of water on the fixed plate is
A. ρAv^2
B. ρA (v-u)^2
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- A
20. The force exerted by jet of water on the inclined plate is
A. ρAv^2
B. ρA (v-u)^2
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- C
21. The force exerted by jet of water on the moving vertical plate is
A. ρAv^2
B. ρA (v-u)^2
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- B
22. The force exerted by jet of water on the moving inclined plate is
A. ρAv^2
B. ρA (v-u)^2 sin^2.θ
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- B
23. The force exerted by jet of water on the fixed curved plate is
A. ρAv^2
B. ρA (v-u)^2 sin^2.θ
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- D
24. The force exerted by jet of water on the fixed curved plate at one end tangentially when the plate is symmetric is
A. ρAv^2
B. ρA (v-u)^2 sin^2.θ
C. 2.ρAv^2 cosθ
D. ρAv^2 (1+cosθ)
Answer:- D
25. The force exerted by jet of water on the fixed curved plate at one end tangentially when the plate is unsymmetric is
A. ρAv^2 (cosθ+cosϕ)
B. ρA (v-u)^2 sin^2.θ
C. 2.ρAv^2 cosθ
D. ρAv^2 (1+cosθ)
Answer:- A
26. The force exerted by jet of water on the moving curved plate in direction of jet is
A. ρAv^2
B. ρA (v-u)^2 (1+cosθ)
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- D
27. The work done or power developed by jet of water on the fixed plate is
A. ρAv^2
B. ρA (v-u)^2
C. 0
D. ρAv^2 (1+cosθ)
Answer:- C
28. The work done or power developed by jet of water on the inclined plate is
A. ρAv^2
B. ρA (v-u)^2
C. 0
D. ρAv^2 (1+cosθ)
Answer:- C
29. The work done or power developed by jet of water on the moving vertical plate is
A. ρAv^2
B. ρA (v-u)^2 × U
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- B
30. The work done or power developed by jet of water on the moving inclined plate is
A. ρAv^2
B. ρA (v-u)^2 sin^2.θ × U
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- B
31. The work done or power developed by jet of water on the fixed curved plate is
A. 0
B. ρA (v-u)^2 sin^2.θ
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ)
Answer:- A
32. The work done or power developed by jet of water on the fixed curved plate at one end tangentially when the plate is symmetric is
A. ρAv^2
B. ρA (v-u)^2 sin^2.θ
C. 0
D. ρAv^2 (1+cosθ)
Answer:- C
33. The work done or power developed by jet of water on the fixed curved plate at one end tangentially when the plate is unsymmetric is
A. ρAv^2 (cosθ+cosϕ)
B. ρA (v-u)^2 sin^2.θ
C. 2.ρAv^2 cosθ
D. 0
Answer:- D
34. The work done or power developed by jet of water on the moving curved plate in direction of jet is
A. ρAv^2
B. ρA (v-u)^2 (1+cosθ)
C. ρAv^2 sinθ
D. ρAv^2 (1+cosθ) × U
Answer:- D
35. The condition for maximum power in impact of jets is...
A. U= V/2
B. U= V×2
C. U= V/4
D. V= U/2
Answer:- A
36. In impact of jets The maximum efficiency corresponding to maximum power is....
A. 66.67%
B. 65%
C. 50%
D. 45%
Answer:- C
37. The power developed by the jet striking on fixed plate is zero.
A. True
B. False
Answer:- A
38. Lawn sprinkler is a best example of moment of momentum equation.
A. True
B. False
Answer:- A
39. The force exerted by jet of water on the hinged plate in direction of jet is
A. ρAv^2
B. ρA (v-u)^2 (1+cosθ)
C. ρAv^2 cosθ
D. ρAv^2 (1+cosθ)
Answer:- C
40. The value of bulk modulus of a fluid is required for a determine to....
A. Reynolds number
B. Mach number
C. Froude number
D. None of the above
Answer:- B
41. The pressure at a stagnation point is always low.
A. True
B. False
Answer:- B
42. Stagnation point in compressible flow where velocity of the fluid is zero.
A. True
B. False
Answer:- A
43. The flow is called hypersonic if the Mach number is....
A. Unity
B. Less than unity
C. 1 to 6
D. More than 6
Answer:- D
44. A flow called Sonic if the Mach number is unity.
A. True
B. False
Answer:- A
45. The flow is called sonic if the Mach number is....
A. Unity
B. Less than unity
C. 1 to 6
D. More than 6
Answer:- A
46. The flow is called sub-sonic if the Mach number is....
A. Unity
B. Less than unity
C. 1 to 6
D. More than 6
Answer:- B
47. For the subsonic flow the Mach number is less than unity.
A. True
B. False
Answer:- A
48. For the hypersonic flow the Mach number is unity.
A. True
B. False
Answer:- B
49. For the hypersonic flow the Mach number is more than 6.
A. True
B. False
Answer:- A
50. For the one dimensional flow the flow takes place in a straight line.
A. True
B. False
Answer:- A
Here we concluding, If you have any queries about the topic of Mcq on impact of jets, then feel free to comment below.
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