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Which of the given fact of the BEL Battle Field Surveillance Radar is false? 1. It is a man portable 2D short-range battlefield and perimeter surveillance radar. 2. It is developed by the the Electronics and Radar Development Establishment (LRDE) and Bharat Electronics Limited (BEL). 3. Upto 10 radars can be networked at a time. 4. It operates over 12 channels in S band.
S1:This weather-vane often tops a church spire, tower or high building.
P :They are only wind-vanes.
Q :Neither alone can tell us what the weather will be.
R :They are designed to point to direction from which the wind is coming.
S :Just as the barometer only tells us the pressure of air, the weather-vane tells us the direction of wind.
S6:The weather-vane can, however give us some indication of other.

The Proper sequence should be:
Which of the following is the primary specification for weather radar systems, using an airborne pulse Doppler radar?
In an AM system receiver. the mixer translates the carrier frequency fc to a fixed intermediate frequency of 450 kHz. Given a broadcast signal of frequency 900 kHz. What is the corresponding image frequency when a superhetrodyne receiver is employed with local oscillator frequency greater than the broadcast signal frequency?
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:
A radar approaches an observer A whose speed Va = 17 m/s with frequency fa = 730 HZ at a distance of d = 141 m with a frequency shift 10 HZ. Find the frequency if the observer is at a speed vam = 340 m/s with a Doppler shift of 10 HZ with Laser light.
The following sentences form a paragraph. The first and the last sentences of the paragraph are given. The rest of the sentences are numbered as P, Q, R and S. These four parts are not given in their proper order. Read the sentences and choose the alternative that arranges them in the correct order. 1. Forecasting the weather has always been a difficult business P. During a period of drought, streams, and rivers dried up, the cattle died from thirst and the crops were ruined. Q. Many different things affect the weather and we have to study them carefully to make an accurate forecast.  R. Ancient Egyptians had no need of this- weather in the Nile valley hardly ever changes. S. In early times, when there were no instruments, such as a thermometer or the barometer, the man looked for tell-tale signs in the sky. 6. He made his forecasts by watching flights of the birds or the way smoke rose from the fire.
S1:Forecasting the weather has always been a difficult business.
P :During a period of drought, streams and rivers dried up, the cattle died from thirst and were ruined.
Q :Many different things affect the weather and we have to study them carefully to make accurate forecast.
R :Ancient Egyptians had no need of weather in the Nile Valley hardly ever changes.
S :In early times, when there were no instruments, such as thermometer or the barometer, man looked for tell-tale signs in the sky.
S6:He made his forecasts by watching flights of the birds or the way smoke rose from fire.

The Proper sequence should be:
S1: Forecasting the weather has always been a difficult business.
P: During a period of drought, streams and rivers dried up, the cattle died from thirst and the crops were ruined.
Q: Many different things affect the weather and we have to study them carefully to make an accurate forecast.
R: Ancient Egyptians had no need of this weather in the Nile valley hardly ever changes.
S: In early times, when there were no instruments, such as thermometer or the barometer, man looked for tell-tale signs in the sky.
S6: He made his forecasts by watching flights of the birds or the way smoke rose from fire.

The Proper sequence should be:
The different age group people go for a morning walk. The age of 20 people who go for a morning walk is as follows: 19, 15, 34, 45, 69, 74, 24, 67, 77, 89, 91, 45, 65, 35, 56, 67, 55, 23, 78, 52 The Grouped frequency distribution table of above will be: (A)  S. No Class Frequency 1 0-20 2 2 20-40 4 3 40-60 5 4 60-80 7 5 80-100 2 (B)  S. No Class Frequency 1 0-20 3 2 20-40 3 3 40-60 5 4 60-80 6 5 80-100 3 (C) S. No Class Frequency 1 0-20 2 2 20-40 4 3 40-60 5 4 60-80 5 5 80-100 4 (D) S. No Class Frequency 1 0-20 2 2 20-40 7 3 40-60 2 4 60-80 7 5 80-100 2