QUESTIONS: 1. A transformer is rated at 120V primary/23V secondary. What peak to peak secondary voltage would be displayed on a scope on the secondary side? Show all your calculations.

3. You are an electrician. You have been asked by a homeowner to install a lighted mirror in a bathroom. The mirror contains eight 40-watt lamps. Upon checking the service panel, you discover that the bathroom circuit is connected to a single 120-volt, 20-ampere circuit breaker. At present, the circuit supplies power to an electric wall heater rated at 1000 watts, a ceiling fan with a light kit, and a light fixture over the mirror. The fan motor has a full-load current draw of 3.2 amperes and the light kit contains three 60-watt lamps. The light fixture presently installed over the mirror contains four 60-watt lamps. The homeowner asked whether the present light fixture over the mirror can be replaced by the lighted mirror. Assuming all loads are continuous, can the present circuit supply the power needed to operate all the loads without overloading the circuit?

L.2. The most energy-efficient light source of the HID family is theA. fluorescent lamp.B. metal halide lamp.C. mercury lamp.D. high-pressure sodium lamp.L.3. Which of the following provisions are used to compare ballast quality?A. Bulb size, case material, coil sizeB. Crest factor, power factor, total harmonic distortionC. Crest factor, filament length, total harmonic distortionD. Bulb size, power factor, case material

5. Materials that increase their resistance with an increase in temperature have a _____ coefficient of temperature.   Select one: A. POSITIVE B. NEGATIVE

2 parts ( A-B ) Read and solve carefully please write clearly and box the final answer Part A - What is the value of the resistor shown below in ohms? Don't use scientific notation.? Part B - What is the numerical value for LED_BUILTIN for Arduino Uno? In other words, which pin is connected to the built-in LED?

Convert 214 ºF to engineering notation using the appropriate SI unit. (You must provide an answer before moving to the next part.)   214 ºF in SI unit using the proper engineering notation is written as  K.

21. A piece of wire that is one mil in diameter and one foot long is one mil-foot.   Select one: TRUE FALSE

14] Encode Decimal '-124' using Two's Complement. Express your answer in Hex. 15] How much Current is passing through a 470 ohm Resistor that is dropping 3.3 Volts? Express your answer in Decimal with 2 digits of significance.  16] How many Volts are being dropped by a 2.7k Ohm Resistor if it is passing 75uA? Express your answer in Decimal with 2 digits of significance.