MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For cyclic boundary conditions, which of these should be equated? |
| A. | The flow variables |
| B. | Gradient of the flow variables |
| C. | Flux of the flow variables |
| D. | Second derivative of the flow variables |
| Answer» D. Second derivative of the flow variables | |
| 2. |
Periodic or cyclic boundary conditions are a type of ____________ |
| A. | wall boundary conditions |
| B. | constant pressure boundary conditions |
| C. | inlet boundary conditions |
| D. | symmetry boundary conditions |
| Answer» E. | |
| 3. |
The velocity components in the nodes which are not at the boundary are found using ____________ |
| A. | energy equation |
| B. | continuity equation |
| C. | equations of state |
| D. | momentum equation |
| Answer» E. | |
| 4. |
Constant pressure boundary condition makes the pressure correction cell nearest to the boundaries to act as ____________ |
| A. | Source or sink of mass |
| B. | Source or sink of heat |
| C. | Convection cell |
| D. | Diffusion cell |
| Answer» B. Source or sink of heat | |
| 5. |
Which of these conditions is used to find the velocity component of the boundary while using constant pressure boundary condition? |
| A. | Conservation of angular momentum |
| B. | Conservation of linear momentum |
| C. | Energy conservation |
| D. | Continuity |
| Answer» E. | |
| 6. |
Which of these pose a problem in constant pressure boundaries? |
| A. | Velocity |
| B. | Flow direction |
| C. | Density |
| D. | Heat flux direction |
| Answer» C. Density | |
| 7. |
While applying the constant pressure boundary condition, which of these is done? |
| A. | Pressure is set to 0 |
| B. | Pressure correction is set to 1 |
| C. | Pressure correction is set to zero |
| D. | Pressure is set to 1 |
| Answer» D. Pressure is set to 1 | |
| 8. |
When do we use a constant pressure boundary condition? |
| A. | When there is an impermeable boundary |
| B. | When there is constant pressure |
| C. | When we do not know the flow distribution but we know the pressure at the boundaries |
| D. | When we do not know the pressure at the boundaries |
| Answer» D. When we do not know the pressure at the boundaries | |
| 9. |
What happens to the force of attraction between the capacitors when the distance of separation between the plates increases? |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | Becomes zero |
| Answer» C. Remains the same | |
| 10. |
What happens to the force of attraction between the capacitors when the potential difference between the plates decreases? |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | Becomes zero |
| Answer» C. Remains the same | |
| 11. |
A metal parallel plate capacitor has 100mm diameter and the distance between the plates is 1mm. The capacitor is placed in air. Calculate the potential difference between the plates if the force on each plate is 0.035N. |
| A. | 1kV |
| B. | 1V |
| C. | 2kV |
| D. | 2V |
| Answer» B. 1V | |
| 12. |
A metal parallel plate capacitor has ‘a’mm diameter and the distance between the plates is 1mm. The capacitor is placed in air. Force on each plate is 0.035N and the potential difference between the plates is 1kV. Find ‘a’. |
| A. | 10mm |
| B. | 100mm |
| C. | 1000m |
| D. | 1000cm |
| Answer» C. 1000m | |
| 13. |
A metal parallel plate capacitor has 100mm diameter and the distance between the plates is ‘a’ mm. The capacitor is placed in air. Force on each plate is 0.035N and the potential difference between the plates is 1kV. Find ‘a’. |
| A. | 1m |
| B. | 1cm |
| C. | 10cm |
| D. | 1mm |
| Answer» E. | |
| 14. |
Which among the following is the correct expression for force between the plates of a parallel plate capacitor? |
| A. | F=epsilon*A*(V/x)2/2 |
| B. | F=epsilon*A*(V/x)2/3 |
| C. | F=epsilon (V/x)2/2 |
| D. | F=epsilon (V/x)2/3 |
| Answer» B. F=epsilon*A*(V/x)2/3 | |
| 15. |
What is the degree of the differential equation, x3-6x3 y3+2xy=0? |
| A. | 3 |
| B. | 5 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 16. |
In recurrence relation, each further term of a sequence or array is defined as a function of its succeeding terms. |
| A. | True |
| B. | False |
| Answer» C. | |
| 17. |
What is the complete solution of the equation, \(q= e^\frac{-p}{α}\)? |
| A. | \(z=ae^\frac{-a}{α} y\) |
| B. | \(z=x+e^\frac{-a}{α} y\) |
| C. | \(z=ax+e^\frac{-a}{α} y+c\) |
| D. | \(z=e^\frac{-a}{α} y\) |
| Answer» D. \(z=e^\frac{-a}{α} y\) | |
| 18. |
A particular solution for an equation is derived by substituting particular values to the arbitrary constants in the complete solution. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 19. |
What is the order of the non-homogeneous partial differential equation,\(\frac{∂^2 u}{∂x^2}+(\frac{∂^2 u}{∂x∂y})^2+\frac{∂^2 u}{∂y^2}=x^2+y^2\)? |
| A. | Order-3 |
| B. | Order-2 |
| C. | Order-0 |
| D. | Order-1 |
| Answer» C. Order-0 | |
| 20. |
Which of the following methods is not used in solving non-homogeneous equations? |
| A. | Exponential Response Formula |
| B. | Method of Undetermined Coefficients |
| C. | Orthogonal Method |
| D. | Variation of Constants |
| Answer» D. Variation of Constants | |
| 21. |
While an ODE of order m has m linearly independent solutions, a PDE has infinitely many. |
| A. | False |
| B. | True |
| Answer» C. | |
| 22. |
What is the general form of the general solution of a non-homogeneous DE (uh(t)= general solution of the homogeneous equation, up(t)= any particular solution of the non-homogeneous equation)? |
| A. | u(t)=uh (t)/up (t) |
| B. | u(t)=uh (t)*up (t) |
| C. | u(t)=uh (t)+up (t) |
| D. | u(t)=uh (t)-up (t) |
| Answer» D. u(t)=uh (t)-up (t) | |
| 23. |
Which of the following is a non-homogeneous equation? |
| A. | \(\frac{∂^2 u}{∂t^2}-c^2\frac{∂^2 u}{∂x^2}=0\) |
| B. | \(\frac{∂^2 u}{∂x^2}+\frac{∂^2 u}{∂y^2}=0\) |
| C. | \(\frac{∂^2 u}{∂x^2}+(\frac{∂^2 u}{∂x∂y})^2+\frac{∂^2 u}{∂y^2}=x^2+y^2\) |
| D. | \(\frac{∂u}{∂t}-T \frac{∂^2 u}{∂x^2}=0\) |
| Answer» D. \(\frac{∂u}{∂t}-T \frac{∂^2 u}{∂x^2}=0\) | |
| 24. |
Non-homogeneous which may contain terms which only depend on the independent variable. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 25. |
A → (A ∨ q) is a __________ |
| A. | Tautology |
| B. | Contradiction |
| C. | Contingency |
| D. | None of the mentioned |
| Answer» B. Contradiction | |
| 26. |
(A ∨ F) ∨ (A ∨ T) is always _________ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 27. |
A ∧ ¬(A ∨ (A ∧ T)) is always __________ |
| A. | True |
| B. | False |
| Answer» C. | |
| 28. |
(A ∨ ¬A) ∨ (q ∨ T) is a __________ |
| A. | ∨ (q ∨ T) is a __________a) Tautology |
| B. | Contradiction |
| C. | Contingency |
| D. | None of the mentioned |
| Answer» B. Contradiction | |
| 29. |
¬ (A ∨ q) ∧ (A ∧ q) is a ___________ |
| A. | Tautology |
| B. | Contradiction |
| C. | Contingency |
| D. | None of the mentioned |
| Answer» C. Contingency | |
| 30. |
A compound proposition that is always ___________ is called a contradiction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 31. |
A compound proposition that is always ___________ is called a tautology. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 32. |
Wing planform is always elliptic. |
| A. | True |
| B. | False |
| Answer» C. | |
| 33. |
Fillet radius is typically more at rear of the aircraft. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 34. |
At maximum thickness point, fillet is in ____________ |
| A. | purely vertical plane |
| B. | purely in hp |
| C. | plane at an angle of less than 20° always |
| D. | plane at 45° always |
| Answer» B. purely in hp | |
| 35. |
Determine the corrections or otherwise of the following assertion [A] and reason [R]:Assertion [A]: To generate new airfoil, we use spanwise line instead of chord line in flat wrap interpolation technique.Reason[R]: Chordwise line will generate flat structure from curves having different values of tangent angle. |
| A. | Both [A] and [R] are true and [R] is the correct reason for [A] |
| B. | Both [A] and [R] are true but [R] is not the correct reason for [A] |
| C. | Both [A] and [R] are false |
| D. | [A] is true but [R] is false |
| Answer» E. | |
| 36. |
As a designer, our job is to design a wing which has root chord Cr as 1m. What should be the approximate radius of fillet? |
| A. | 0.1m |
| B. | 1m |
| C. | 2m |
| D. | 2.1m |
| Answer» B. 1m | |
| 37. |
Following diagram represents? |
| A. | Rounded wingtip |
| B. | LEX |
| C. | Midline tip |
| D. | Blended tip |
| Answer» B. LEX | |
| 38. |
An unstable A/C configuration is a typical wing-aft tail body. IF MAC is 4m then, what would be the approximated location of the CG? |
| A. | 2m |
| B. | 5m |
| C. | 6m |
| D. | 7m |
| Answer» B. 5m | |
| 39. |
A fighter jet is flying with wing span of 90ft. If mean aerodynamic chord MAC is at 30ft from tip chord then, to design such wing which type of planform should I use? |
| A. | Delta |
| B. | Rectangular |
| C. | Square |
| D. | Triangle |
| Answer» B. Rectangular | |
| 40. |
As a designer, our task is to design wing layout such that the location of MAC from root chord or centre line is at 8ft. Find the appropriate value of the wingspan if wing is rectangular. |
| A. | 32ft |
| B. | 50ft |
| C. | 28m |
| D. | 32m |
| Answer» B. 50ft | |
| 41. |
What is the effect of condenser temperature on total B.P.? |
| A. | Increase in temperature decreases the total B.P. |
| B. | Decrease in temperature increases the total B.P. |
| C. | Does not affect the total B.P. |
| D. | Increase in temperature increases the total B.P. |
| Answer» E. | |
| 42. |
What is the effect of condenser temperature on B.P. per tonne of refrigeration? |
| A. | Increase in temperature decreases the B.P. |
| B. | Decrease in temperature increases the B.P. |
| C. | Does not affect the B.P. |
| D. | Increase in temperature increases the B.P. |
| Answer» E. | |
| 43. |
What is the effect of condenser temperature on compressor refrigerating capacity? |
| A. | Increase in temperature decreases the refrigeration capacity |
| B. | Decrease in temperature decreases the refrigeration capacity |
| C. | Does not affect the capacity of refrigeration |
| D. | Increase in temperature increases the refrigeration capacity |
| Answer» B. Decrease in temperature decreases the refrigeration capacity | |
| 44. |
The effect of suction temperature on the total B.P. is? |
| A. | To increase the B.P. with the decrease of suction temperature |
| B. | To decrease the B.P. with the decrease of suction temperature |
| C. | That the total B.P. remains unaffected by the changes in suction temperature |
| D. | Can’t say only from the suction temperature |
| Answer» C. That the total B.P. remains unaffected by the changes in suction temperature | |
| 45. |
The effect of suction temperature on the compressor B.P. per tonne of refrigeration is? |
| A. | Compressor B.P. per tonne of refrigeration decreases with the increase in suction temperature |
| B. | Compressor B.P. per tonne of refrigeration increases with the increase in suction temperature |
| C. | Compressor B.P. per tonne of refrigeration remains the same with any change in suction temperature |
| D. | Compressor B.P. per tonne of refrigeration decreases with the decrease in suction temperature |
| Answer» B. Compressor B.P. per tonne of refrigeration increases with the increase in suction temperature | |
| 46. |
The refrigeration capacity decreases with the decrease in the evaporator or suction temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 47. |
Which one of the following is not an important parameter in the design of a refrigerant reciprocating compressor? |
| A. | Evaporator temperature |
| B. | Condenser temperature |
| C. | Suction temperature |
| D. | Compressor temperature |
| Answer» E. | |
| 48. |
The performance of a refrigerant reciprocating compressor is not measured in terms of its ______________ |
| A. | refrigerating capacity |
| B. | brake power per tonne of refrigeration |
| C. | total brake power |
| D. | horse power |
| Answer» E. | |
| 49. |
A hollow shaft has outside diameter 120 mm and thickness 20 mm. Find the polar moment of inertia (J). |
| A. | 16.36 × 106 mm4 |
| B. | 14.65 × 106 mm4 |
| C. | 10.32 × 106 mm4 |
| D. | 23.18 × 106 mm4 |
| Answer» B. 14.65 × 106 mm4 | |
| 50. |
What is the approximate value of coefficient of linear expansion for steel? |
| A. | 13 × 10-66 /°C |
| B. | 11.5 × 10-6 /°C |
| C. | 12 × 10-6 /°C |
| D. | 16 × 10-6 /°C |
| Answer» C. 12 × 10-6 /°C | |