MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your General Awareness knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Consider a lossless antenna with a directive gain of +6 decibel. If 1 milliwatt of power is fed to it, the total power radiated by the antenna will be (in milliwatt) |
| A. | 4 |
| B. | 1 |
| C. | 7 |
| D. | 1/4 |
| Answer» C. 7 | |
| 2. |
The modes in a rectangular waveguide are denoted by TEmn / TMmn, where m and n are the Eigen values along the larger and smaller dimensions of the waveguide respectively. Which one of the following statements is true? |
| A. | The TM10 mode does not exist |
| B. | The TE10 mode does not exist |
| C. | The TE10 and TM10 both exist and have same cut off frequencies |
| D. | When m and n are increases, the cut off frequency decreases |
| Answer» B. The TE10 mode does not exist | |
| 3. |
A two wire transmission line of characteristic impedance Z is connected to a load impedance ZL(ZL and Zo are not equal). Impedance matching cannot be achieved with |
| A. | A quarter wavelength transformer |
| B. | A half wavelength transformer |
| C. | An open circuited parallel stub |
| D. | A short circuited parallel stub |
| Answer» C. An open circuited parallel stub | |