Question 4: The Transformer A current transformer is used to provide a range of values of 5A, 1A and 0.5A to an ammeter display, as shown in the diagram below. If 120 mA is required to deflect the meter full-scale and the primary winding has 4 turns, Calculate the required number of turns in the secondary winding to produce each of the desired ranges on the scale. Current transformer A Alternator Load AC ammeter

Q: Using spray arc transfer, amperes are used with a 0.045" (1.1mm) electrode to weld stainless steel.…

A: Spray arc are generally the droplets which are around the arc to the weld pool used to increase the…

Q: Draw diagrams to show how to connect a Digital Multimeter (DMM) for the following situations: (1) to…

A:

Q: Which of the following statements about fluorescent lamps is correct? a. Fluorescent lamps have…

A: The above question is with respect to the working of a fluorescent lamp.

Q: An electric motor running a large copier draws 1.3 kW. The motor runs 5 hours in a day. How much…

A: In this question, we need to determine the energy per day in Btu. We know1 kWH = 3412.142 Btu

Q: What type of matching box will you use with a turns ratio of 1.204

A: A matching box is a tool used to optimize power transmission between a source and a load by matching…

Q: B. Use this graphic for Questions 7, 8, 9 and 10. V,= 22.5 V R1 2 kQ R2 $5 kO B vs 34 kQ R3 3 kQ -D

A:

Q: Problem 1 is a review of your understanding of KVL (Kirchhoff's voltage law) Using KVL find the…

A: A simple question based on network analysis and the topics described in the solution are kirchoff's…

Q: Where a 2 1/2 inch conduit enters an angle pull box with three 400 MCM type THHN conductors and a 2…

A: For angle pulls, the distance between each raceway entry inside the baox and the opposite wall of…

Q: Explain any 2 types of Battery?

A: Steel and a combination of zinc/manganese/potassium/graphite make up the majority of an alkaline…

Q: We would like to run the power wires for both cooling pumps in the same RMC from the Breaker panel…

A: Option A (#6 AWG) is not large enough to handle a 100 amp load at 120/240V, as it is only rated for…

Photoconductive Cell

Photoconductive cells are light-sensitive resistors in which resistance is inversely proportionated to light intensity when illuminated. These devices consist of a thin single-crystal or polycrystalline film of composite semiconductor materials. Cadmium sulfide (CdS) is used to make the most commercially available photoconductive particles which are sensitive to light in the visible spectrum. Other less commonly used substances respond to infrared light, but not to the visible spectrum. Such substances are lead sulfide (PbS), lead selenide (PbSe), and lead telluride (PbTe), and so on.