Microwave Communication It is possible to increase the maximum range of a radar equipment by Lowering the pulse frequency All of these Raising the peak power of the transmitter Narrowing the beam width and increasing the pulse duration Lowering the pulse frequency All of these Raising the peak power of the transmitter Narrowing the beam width and increasing the pulse duration ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication At what position is the input signal inserted into a traveling-wave tube? At the control grid of the electron gun At the cathode end of the helix At the collector end of the helix At the collector At the control grid of the electron gun At the cathode end of the helix At the collector end of the helix At the collector ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the following is used as an oscillator device in the SHF band? Tunnel diode Both B and C Klystron tube Thyratron tube Tunnel diode Both B and C Klystron tube Thyratron tube ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the Degree of emission from the cathode Distributed lead inductance Inter-electrode capacitance Electron transit time Degree of emission from the cathode Distributed lead inductance Inter-electrode capacitance Electron transit time ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m) S = 3λR/L S = λR/RL S = λR/L S = 2λR/L S = 3λR/L S = λR/RL S = λR/L S = 2λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which causes multipath or frequency selective fading? Nearer reflector Large reflector Small reflector Further reflector Nearer reflector Large reflector Small reflector Further reflector ANSWER DOWNLOAD EXAMIANS APP
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