1. Use two NOR gates to construct basic SR latch circuit shown in Figure 1. Connect R and S inputs to switches A and B respectively. DO NOT FORGET to connect Vcc and Ground pins of ICs you used. Connect and Q and Q' to the Logic Indicator. Realize the truth table according to the inputs in Table 1. What happens SR=11 goes to SR=00? Table 4.1 田 SRQ Q 0 0 0 1 |1 |1 1

Consider a step down converter supplied by a DC power source of magnitude Vs = 220 V. The switching period is 0.1 ms and the duty cycle k is set to 0.5. The load is an inductive load with R=5 Ohms and L=10 mH. The switch is ideal. The RMS converter current IR is equal to 15.56A. The ripple factor of the input current RFs would be equal to: Select one: a. 0% Ob. 50% Oc. 100% d. None of these

Refer to the National Electrical Code® or the working drawings when necessary. Where applicable, responses should be written in complete sentences. For problems 1 and 2, six luminaires, similar to Style E used in the Commercial Building, are to be installed in a room that is 12 ft x 18 ft (~3.7 m x ~5.5 m) with a 9 ft (2.8 m) floor-to-ceiling height. The spacing ratio for the luminaire is 1:0. 1. The maximum distance that the luminaires can be separated and achieve uniform illuminance is ft ( m). For problems 2-5, two luminaires, 8 ft (2.5 m) and 4 ft (1.2 m) in length with dimensions as shown in Figure 15-7, are to be installed in tandem (end to end). The end of the long luminaire is to be 2 ft (600 mm) from the wall. 2. The center of the outlet box should be roughed in at ft ( m) from the wall. 3. The first support should be installed at the wall. ft ( m) from 4. The second support should be installed at from the wall. ft ( m) 5. The final support should be installed at the wall. ft…

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