An 30 dB attenuator is made using 1W rated resistors found in a lab. Assume a power source with Rs = 50ohms) delivers 100W into the attenuator with a 50 ohm load connected, 1. How much power in watts is disipated at the output? 2. How much power is dissipated by the attenuator in WATTS 3. What is the Vpk input voltage that is seen at the attenuators input terminals 4. What is the Vpk voltage that is seen at the load connected to the output of the attenuator? 5. Is this a matched system? If so, why is it important to have a matched system?

For an AM DSBFC modulator with a carrier frequency f. = 100 kHz and a maximum modu- lating signal fm(max) = 5 kHz, determine a. Frequency limits for the upper and lower sidebands. b. Bandwidth. c. Upper and lower side frequencies produced when the modulating signal is a single- frequency 3-kHz tone. Then d. Sketch the output frequency spectrum.

d) A regulator as shown in Figure 4 has an input voltage, Vs 12 V. The duty cycle, k = 0.35 and the switching frequency is 30 kHz. It also has an inductance, L= 200 µH, filter capacitance, C = 440 µF. The average load current, la = 1.25 A. Determine the; i. average output voltage, Va. ii. peak-to-peak output ripple voltage, AVc. iii. peak-to-peak output ripple current of inductor, AI. iv. peak current of the transistor, Ip. v. critical values of L and C. vi. critical values of L and C if Vs is increased to 14 V. Estimate the change in percentage for the critical values of L and C. V, Load V V G Figure 4

Plz answer this ASAP Two resistors 15 and 20 respectively are connected in parallel and then connected in series with a resistor 10 2. The resistor circuit is connected to the terminal voltage X Volts. X=110 volts A.)Make an electrical circuit B.)Calculate the current flowing through each resistor.