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The useful dynamic range applicable for antenna, RF/IF conversion, and ADC’s is given by the ratio of smallest processable signal to the smallest detectable signal.

Correct Answer: False
The useful dynamic range is given by the ratio of largest processable signal to the smallest detectable signal. It is applicable for antenna, RF/IF conversion, and ADC’s. Dynamic range is one of the controlling parameters in the design of software defined radio.

The digitization process i.e. the digital image has M rows and N columns, requires decisions about values for M, N, and for the number, L, of max gray levels is an integer power of 2 i.e. L = 2k, allowed for each pixel. If we assume that the discrete levels are equally spaced and that they are integers then they are in the interval __________ and Sometimes the range of values spanned by the gray scale is called the ________ of an image. and static range respectively b) and dynamic range respectively c) and static range respectively d) and dynamic range respectively

Pulse radar operating at 10GHz frequency has an antenna with a gain of 28 dB and a transmitted power of 2kW. If it is desired to detect a target of cross section 12m2, and the minimum detectable signal is -90 dBm, the maximum range of the radar is:

The time taken by the ADC from the active edge of SOC(start of conversion) pulse till the active edge of EOC(end of conversion) signal is called

Consider the following statements.
1. Ohm's law is not applicable at very low and very high temperature.
2. Ohm's law is applicable to semiconductor.
3. Ohm's law is not applicable to electron tubes, discharge tubes and electrolytes.
4. Conductance is the reciprocal of resistance and ismeasured in siemens.
Which of the statements given above are correct?

An image whose gray-levels span a significant portion of gray scale have __________ dynamic range while an image with dull, washed out gray look have __________ dynamic range.

A radio link has 15 W transmitter connected to an antenna of 2.5 m2 effective aperture at 5 GHz. The receiving antenna has an effective aperture of 0.5 m2 and is located at a 15 Km line of sight distance from transmitting antenna. Assuming lossless, matched antennas, the power delivered to the receiver is:

Dynamic range of ADC is depended on _______________

Which of the following statements are true about ratio analys is?
1. Ratio analysis is useful in financial analysis.
2. Ratio analysis is helpful in communication and coordination.
3. Ratio analysis is not helpful in identifying weak spots of the business.
4. Ratio analysis is helpful in financial planning and forecasting.

∠ABC>∠ADC হলে, ∠ABC-∠ADC=?

A rectangular horn antenna has an aperture area of 3λ × 2λ. If the aperture efficiency of an antenna is 90%, then the directivity of the antenna is: