MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Antenna Measurements knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following equation holds good for gain transfer method?a) Gtest antenna = Gstd antenna) + \(10log(\frac{P_{Test}}{P_{Std}}) \) b) Gtest antenna = Gstd antenna) – \(10log(\frac{P_{Test}}{P_{Std}}) \) c) Gtest antenna + Gstd antenna) = \(10log(\frac{P_{Test}}{P_{Std}}) \) d) Gtest antenna / Gstd antenn |
| A. | Gtest antenna = Gstd antenna) + \(10log(\frac{P_{Test}}{P_{Std}}) \) |
| B. | Gtest antenna = Gstd antenna) – \(10log(\frac{P_{Test}}{P_{Std}}) \) |
| C. | Gtest antenna + Gstd antenna) = \(10log(\frac{P_{Test}}{P_{Std}}) \) |
| D. | Gtest antenna / Gstd antenna) = \(10log(\frac{P_{Test}}{P_{Std}}) \) |
| Answer» B. Gtest antenna = Gstd antenna) – \(10log(\frac{P_{Test}}{P_{Std}}) \) | |
| 2. |
Which of the following method is employed for the gain transfer method for antenna outdoor range? |
| A. | Anechoic chamber |
| B. | Tampered chamber |
| C. | Reflection range |
| D. | Compact range |
| Answer» D. Compact range | |
| 3. |
What is the antenna efficiency if the gain equals to the directivity of the antenna? |
| A. | 1 |
| B. | 0 |
| C. | 3 |
| D. | 2 |
| Answer» B. 0 | |
| 4. |
Relation between Antenna gain G and directivity D is ______ |
| A. | G = ∈r D |
| B. | G = ∈r/D |
| C. | G = D/∈r |
| D. | G = 1/∈rD |
| Answer» B. G = ∈r/D | |
| 5. |
Antenna efficiency of a lossless isotropic antenna is dB is ____ |
| A. | 0 |
| B. | 1 |
| C. | 3 |
| D. | -3 |
| Answer» B. 1 | |
| 6. |
In which of the following method does not require standard gain of antennas for gain measurements to compare AUT? |
| A. | Absolute gain |
| B. | Gain transfer method |
| C. | Gain compromise method |
| D. | Both gain transfer and absolute gain method |
| Answer» B. Gain transfer method | |
| 7. |
Which of the following is used mostly for the calibration of standard gain of antenna? |
| A. | Absolute gain |
| B. | Gain transfer method |
| C. | Gain compromise method |
| D. | Both gain transfer and absolute gain method |
| Answer» B. Gain transfer method | |
| 8. |
Friss equation provided the basis for the absolute gain measurement. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Friss transfer formula is given by _____ |
| A. | \(P_r = P_t G_r G_t (\frac{λ}{4πR})^2 \) |
| B. | \(P_r = P_t G_r G_t (\frac{λ}{4πR})\) |
| C. | \(P_r = \frac{P_t G_r G_t}{\frac{λ}{4πR}}\) |
| D. | \(P_r = P_t G_r G_t (\frac{λ}{4πR^2})\) |
| Answer» B. \(P_r = P_t G_r G_t (\frac{λ}{4πR})\) | |
| 10. |
In which of the following type of measurement prior gain knowledge of antennas used in measurements is not necessary? |
| A. | Absolute gain |
| B. | Gain transfer method |
| C. | Gain compromise method |
| D. | Both gain transfer and absolute gain method |
| Answer» B. Gain transfer method | |