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. |
Which among the following is not considered as the principal environmental factor? |
| A. | pH |
| B. | Temperature |
| C. | Soil type |
| D. | Pressure |
| Answer» E. | |
| 2. |
Cursor that reflects the changes made to the database table even after the result set is returned |
| A. | Static |
| B. | Dynamic |
| C. | FORWARD_ONLY |
| D. | Keyset |
| Answer» C. FORWARD_ONLY | |
| 3. |
What is the default “SORT” order for a SQL? |
| A. | Ascending |
| B. | Descending |
| C. | As specified by the user |
| D. | None of the mentioned |
| Answer» B. Descending | |
| 4. |
ndarray.dataitemSize is the buffer containing the actual elements of the array. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which of the following function can be used to combine different vectors so as to obtain the result for each n-uplet? |
| A. | iid_ |
| B. | ix_ |
| C. | ixd_ |
| D. | all of the mentioned |
| Answer» C. ixd_ | |
| 6. |
Which of the following is contained in NumPy library? |
| A. | n-dimensional array object |
| B. | tools for integrating C/C++ and Fortran code |
| C. | fourier transform |
| D. | all of the mentioned |
| Answer» E. | |
| 7. |
Which among the following terms should replace the labels ‘A’, ‘B’, and ‘C’ in the diagram? |
| A. | A – Sensing information, B – Spectrum sensing, C – Reconfiguration |
| B. | A – Sensing information, B – Reconfiguration, C – Spectrum sensing |
| C. | A – Spectrum sensing, B – Reconfiguration, C – Sensing information |
| D. | A – Reconfiguration, B – Spectrum sensing, C – Sensing information |
| Answer» B. A – Sensing information, B – Reconfiguration, C – Spectrum sensing | |
| 8. |
Spectrum decision over heterogeneous spectrum band with different characteristics is a challenge in spectrum management. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
What is the full form of CE-OFDM? |
| A. | Closed Envelope Orthogonal Frequency Division Multiplexing |
| B. | Constant Envelope Orthogonal Frequency Division Multiplexing |
| C. | Constant Evolute Orthogonal Frequency Division Multiplexing |
| D. | Closed Evolute Orthogonal Frequency Division Multiplexing |
| Answer» C. Constant Evolute Orthogonal Frequency Division Multiplexing | |
| 10. |
Which among the following is not a disadvantage of using OFDM? |
| A. | Complex computation is necessary |
| B. | Sensitive to frequency offset |
| C. | High peak to average power ratio |
| D. | Low data rate |
| Answer» B. Sensitive to frequency offset | |
| 11. |
Which among the following replaces the static sine pulses of OFDM to improve flexibility? |
| A. | Wavelet bases |
| B. | Triangular pulses |
| C. | Impulse bases |
| D. | Ramp pulses |
| Answer» B. Triangular pulses | |
| 12. |
Which among the following is not an advantage of avoiding contiguous spectrum bands for transmission? |
| A. | Low delay |
| B. | Low power consumption |
| C. | Low interference |
| D. | Mitigation of quality of service degradation |
| Answer» E. | |
| 13. |
Which among the following is not a requirement for multiple spectrum band transmission by xG user? |
| A. | Spectrum holes |
| B. | Compatibility with internal policies |
| C. | Contiguous spectrum band |
| D. | Compatibility with quality of service |
| Answer» D. Compatibility with quality of service | |
| 14. |
Which among the following is a challenge for spectrum decision models? |
| A. | Combining multiple characterization parameters |
| B. | Supporting OFDM networks |
| C. | Supporting multiple spectrum bands |
| D. | Maintaining a decision model for each characterization parameter |
| Answer» B. Supporting OFDM networks | |
| 15. |
Which among the following is not a challenge for spectrum management? |
| A. | Interference avoidance |
| B. | Quality of service awareness |
| C. | Seamless communication |
| D. | Interference temperature measurement |
| Answer» E. | |
| 16. |
Which among the following is not selected in accordance with the user requirement? |
| A. | Interference |
| B. | Data rate |
| C. | Tolerable error rate |
| D. | Transmission mode |
| Answer» B. Data rate | |
| 17. |
Which among the following an expression for spectrum capacity in OFDM based xG networks?α refers to a set of unused spectrum units, G(f) is the channel power gain at frequency f, S0 is the signal power per unit frequency and N_0is the noise power per unit frequency. |
| A. | C=∫α\(\frac{1}{2}\)log2(1+\(\frac{G(f)S_0}{N_0})\) |
| B. | C=∫α\(\frac{1}{2}\)log2(1+\(\frac{S_0}{N_0})\) |
| C. | C=∫αB log2(1+\(\frac{G(f)S_0}{N_0})\) |
| D. | C=∫αB log2(1+\(\frac{G(f)N_0}{S_0})\) |
| Answer» B. C=∫α\(\frac{1}{2}\)log2(1+\(\frac{S_0}{N_0})\) | |
| 18. |
Which among the following is the expression for channel capacity as per Shannon-Hartley theorem?B is bandwidth, N is the average noise power, and S is the average received signal power. |
| A. | C=B+log2(1+ \(\frac{N}{S})\) |
| B. | C=B+log2(1+ \(\frac{S}{N})\) |
| C. | C=B log2(1+ \(\frac{N}{S})\) |
| D. | C=B log2(1+ \(\frac{S}{N})\) |
| Answer» E. | |
| 19. |
What is the approximate accuracy of laser velocimeter? |
| A. | 1 knot and below |
| B. | 2.5 knots |
| C. | 10 knots |
| D. | 0.14 knots |
| Answer» B. 2.5 knots | |
| 20. |
What instrument measures the velocity by Doppler shift from backscatter of aerosol particles? |
| A. | Rotating anemometer |
| B. | Doppler radar |
| C. | Laser velocimeter |
| D. | Laser pitot tube |
| Answer» D. Laser pitot tube | |
| 21. |
What is required to accommodate for the ground effect in swiveling pitot tube below rotor system? |
| A. | Secondary radar |
| B. | Doppler |
| C. | GPS |
| D. | Radio altimeter |
| Answer» E. | |
| 22. |
Airspeed measurements can be made by measuring the vortex’s _______ |
| A. | Strength |
| B. | Frequency |
| C. | Vorticity |
| D. | Direction |
| Answer» C. Vorticity | |
| 23. |
Airspeed is not an essential quantity for rotorcrafts. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 24. |
Plastic working in the temperature range of 0.3-0.5 Tm is called _________ |
| A. | Hot work |
| B. | Cold work |
| C. | Emboss |
| D. | Sheet metal |
| Answer» C. Emboss | |
| 25. |
What is the glass transition temperature of Nylon 6,6? |
| A. | -120oC |
| B. | 50oC |
| C. | 85oC |
| D. | 210oC |
| Answer» C. 85oC | |
| 26. |
Which of the following does not affects the pattern of segregation? |
| A. | Freezing rate |
| B. | Motion of crystals |
| C. | Rate of solidification |
| D. | Model of development of grain structure |
| Answer» D. Model of development of grain structure | |
| 27. |
Micro-segregation pattern can be identified using ________ technique. |
| A. | Positron emission radiography |
| B. | Single photon emission computed tomography |
| C. | Magnetic resonance imaging |
| D. | Autoradiography |
| Answer» E. | |
| 28. |
Where does the solidification in a phase diagram start? |
| A. | Liquidus line |
| B. | Solidus line |
| C. | At equilibrium |
| D. | At freezing point |
| Answer» B. Solidus line | |
| 29. |
In nucleation, particles having radius less than rc are known as _______ |
| A. | Nuclei |
| B. | Embryo |
| C. | Element |
| D. | Atom |
| Answer» C. Element | |
| 30. |
The beginning of a new phase transformation is known as ________ |
| A. | Nucleation |
| B. | Growth |
| C. | Segregation |
| D. | Coring |
| Answer» B. Growth | |
| 31. |
The vertical joints separating the bricks in either length or cross direction is known as the _________ |
| A. | Perpends |
| B. | Closer |
| C. | Bed |
| D. | Arrises |
| Answer» B. Closer | |
| 32. |
The termination of a wall in such a fashion that each alternate course at the end projects is known as the _________ |
| A. | Racking back |
| B. | Tooting |
| C. | Frog |
| D. | Lap |
| Answer» C. Frog | |
| 33. |
A _________ is a mark of depth about 10 mm to 20 mm which is placed on the face of a brick to form a key for holding the mortar. |
| A. | Tooting |
| B. | Cownose |
| C. | Frog |
| D. | Bullnose |
| Answer» D. Bullnose | |
| 34. |
Identify the figure given below. |
| A. | King closer |
| B. | Bevelled closer |
| C. | Half bat |
| D. | Perpends |
| Answer» C. Half bat | |
| 35. |
Identify the missing data in the figure given below. |
| A. | Bed |
| B. | Bed joint |
| C. | Header |
| D. | Perpends |
| Answer» D. Perpends | |
| 36. |
Identify the given figure below. |
| A. | Queen closer |
| B. | King closer |
| C. | Bevelled closer |
| D. | Mitred closer |
| Answer» B. King closer | |
| 37. |
Which element increases DBTT of steel? |
| A. | Ni |
| B. | Mn |
| C. | Al |
| D. | Mo |
| Answer» E. | |
| 38. |
What is aluminum responsible for in steel? |
| A. | Decrease notch toughness |
| B. | Deteriorate strength |
| C. | Lower oxygen content |
| D. | Increase growth strength |
| Answer» D. Increase growth strength | |
| 39. |
Which element decreases DBTT of steel? |
| A. | Ni |
| B. | Mn |
| C. | Al |
| D. | Mo |
| Answer» C. Al | |
| 40. |
Value of ϒm will decrease if _________ |
| A. | Increase in number of unpinned dislocation sources |
| B. | Increase test temperature |
| C. | Increase crack velocity |
| D. | Blunting of crack |
| Answer» D. Blunting of crack | |
| 41. |
Above critical speed, what happens to the energy required to rupture a material when striking velocity increases? |
| A. | Increases slowly |
| B. | Increases rapidly |
| C. | Decreases slowly |
| D. | Decreases rapidly |
| Answer» E. | |
| 42. |
What is the nozzle throat diameter of a rocket having chamber pressure (Pc) of 3 MPa, mass flow rate (m) of 20 kg/s and characteristic velocity (c*) of 1500 m/s? |
| A. | 10 cm |
| B. | 11.3 cm |
| C. | of 3 MPa, mass flow rate (m) of 20 kg/s and characteristic velocity (c*) of 1500 m/s?a) 10 cmb) 11.3 cmc) 12.8 cm |
| D. | 25 cm |
| Answer» C. of 3 MPa, mass flow rate (m) of 20 kg/s and characteristic velocity (c*) of 1500 m/s?a) 10 cmb) 11.3 cmc) 12.8 cm | |
| 43. |
Which of the following is not part of a rocket nozzle? |
| A. | Convergent section |
| B. | Divergent section |
| C. | Throat section |
| D. | Staggering section |
| Answer» E. | |
| 44. |
What constitutes the exhaust gas at the nozzle exit of a chemical rocket engine? |
| A. | combustion products of the propellants |
| B. | A mixture of combustion products and surrounding air |
| C. | Surrounding air |
| D. | Propellants |
| Answer» B. A mixture of combustion products and surrounding air | |
| 45. |
For a rocket traveling at 700 m/s having an exhaust velocity of 1.4 km/s, exhaust gas density of 0.3 kg/m3, nozzle throat diameter of 0.14 cm and nozzle exit diameter of 25 cm, find the total mass flow rate of the propellants. |
| A. | 6.46 kg/s |
| B. | 103.1 kg/s |
| C. | 20.62 kg/s |
| D. | 32.33 kg/s |
| Answer» D. 32.33 kg/s | |
| 46. |
If mo denotes initial mass, mb denotes burnout mass, then what is the expression for mass ratio? |
| A. | (mo-mb)/mbb) (mo-mb)/moc) mb/(mo-m |
| B. | /mbb) (mo-mb)/mo |
| C. | mb/(mo-mb) |
| D. | mb/mo |
| Answer» E. | |
| 47. |
If C denotes effective exhaust velocity and Isp is specific impulse, then which of them is a better performance parameter? |
| A. | C |
| B. | Isp |
| C. | Both of them are equal |
| D. | Both of them are equivalent |
| Answer» E. | |
| 48. |
Which of the following variables is not useful in the determination of rocket effective exhaust velocity? |
| A. | Mass flow rate |
| B. | Exhaust velocity |
| C. | Rocket velocity |
| D. | Exit area |
| Answer» D. Exit area | |
| 49. |
Characteristic velocity is a performance parameter that relates to the efficiency of _____ |
| A. | nozzle |
| B. | combustion chamber |
| C. | injector |
| D. | casing |
| Answer» C. injector | |
| 50. |
What is the characteristic velocity of a rocket if the chamber pressure is 5 MPa, the nozzle throat diameter is 75 mm and the mass flow rate is 25 kg/s? |
| A. | 884 m/s |
| B. | 1768 m/s |
| C. | 3536 m/s |
| D. | 442 m/s |
| Answer» B. 1768 m/s | |