Consider the rectangular sequence r[n] = u[n] – u[n – 8] of length L = 8, as sketched below: 1 ¤[n] 7 According to page 215 of the book, the magnitude of the DTFT of this sequence is sin(4ô) |X(ej®)|=| sin(0.5ô) as sketched below: 8 During a bluejeans session, one of your colleagues takes the N-point DFT of { x[1], ... x[7]} with an unspecified value of N. They meant to screen share but Can you guess what value of N they used? You have only three clues: • They tell you that N> 8. • They tell you that NE{8, 16, 32, 64, 128, ..} is a power of 2. • They tell you that between 10% and 11% of the N-point DFT coefficients a precisely zero. Explain!

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53 seconds. A Question Completion Status: 7C 20 50 32 33 34 35 360 37 38 39 40 QUESTION 35 Altitude is displayed in which unit? Feet. O Meter. O Inches. QUESTION 36 Which indicator is used to measure the speed of aircraft in Knots O Alimeter indicator Airspeed indicator O Vertical speed indicator Click Save and Submit to save and submit. Click Save All Answers to save

Explain a DPDT switch with a drawing and how they work. Also explain NC and NO on the drawing.     Please answer in typing format please ASAP for the like Please it's urgent