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Consider an S band (3 GHz) radar with a rotating aperture antenna with a width of 3 m. Suppose the antenna rotates at a rate of one rotation every 10 seconds. Assume the 3 dB beamwidth Θ3 of the antenna is given by Eq. in the text with k = 2. What is the 3 dB beamwidth in degrees? What is the Nyquist sampling interval in angle, TΘ? How many pulses per 3 dB beamwidth does this correspond to? What is the minimum PRF required to achieve this angular sampling rate?
The power transferred across the air gap of a two pole inductionmotor is 24 kW. If the electromag netic power developed is 22 kW, find the slip. Calculate the output torque if the
Explain the OR Gates - microprocessor? The OR GATE has high or logic 1 output if any of the inputs are high. The output Q is true if input A OR input B is true (or both of t
Find the transmission bandwidth required of a data telemetry system that is to handle three different signals with bandwidths W 1 = 1 kHz, W 2 = 2 kHz, and W 3 = 3 kHz, by emplo
Q. The self and mutual inductances of a machine with two windings are given by L 11 = (1 +sin θ), L 22 = 2(1 + sin θ), and L 12 = L 21 = M = (1-sin θ). Assuming θ = 45°, and le
Explain in detail the operation of 8255 in mode1 taking suitable example. In mode1, Ports A and B are programmed as input or output ports and Port C is used for handshaking.
POP PSW Instruction It is similar to above pop instruction but instead of normal register pairs it uses PSW as its operand. Program status word comprises of the content
Q. Give an account on the operation of the R-C coupled amplifie r. When a.c. signal is applied to the base of the first transistor, it appears in the amplified form across its c
what is finger voltage
Speed Control of Three Phase Induction Motors Three phase induction motors are invariably used in the application where in speed in required to be constant or adjustabl
Decoder A decoder is logic circuit that energizes a particular output line for each combination of input signal. Fig shown the block diagram logic diagram and fu
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