Discharging an insulator - Study guides, Revision notes & Summaries

A.C. - Alternating Current Alternating current - An electric current that first moves one direction, then the opposite direction with a regular frequency Ammeter - Device that measures current when connected in series in a circuit Ampere - The rate of flow of charge per second Ampere (Amp) - Unit of electric current. It is equivalent to coulomb/sec. Attraction of Electric Charges - Unlike charges give negative potential energy (attractive force). Unlike charges attract one another. Capac...

MCQ 770 Questions & Answer Electrical Engineering 2024 UpdateMCQ 770 Questions & Answer Electrical Engineering 2024 Update 1. The ratio of voltage and electric current in a closed circuit a. remains constant b. varies c. increases d. falls Ans-c 2. The curve representing ohm's law is a. sine function b. Linear c. a parabola d. a hyperbola Ans-b 3. The resistance of a conductor having length l area of cross section a and resistivity ρ is given as: a. ρa/l b. ρl/a c. ρla d. l/ρ...

MCQ 770 Questions & Answer Electrical Engineering 2024 UpdateMCQ 770 Questions & Answer Electrical Engineering 2024 Update 1. The ratio of voltage and electric current in a closed circuit a. remains constant b. varies c. increases d. falls Ans-c 2. The curve representing ohm's law is a. sine function b. Linear c. a parabola d. a hyperbola Ans-b 3. The resistance of a conductor having length l area of cross section a and resistivity ρ is given as: a. ρa/l b. ρl/a c. ρla d. l/ρ...

A - ANSWERWhy is it useful in the experiment to hang the balloons? A. Hanging the balloons avoids contact with other objects that might discharge them. B. The string can serve as conductor and facilitate the charging and discharging of the objects. C. The string is an insulator and amplifies the electric charge of the balloon. D. Electric forces are always horizontal, and the string is vertical so that it does not interfere with the electric forces. E. The string allows the recharging of th...

MCQ 770 Questions & Answer Electrical Engineering 2024 UpdateMCQ 770 Questions & Answer Electrical Engineering 2024 Update 1. The ratio of voltage and electric current in a closed circuit a. remains constant b. varies c. increases d. falls Ans-c 2. The curve representing ohm's law is a. sine function b. Linear c. a parabola d. a hyperbola Ans-b 3. The resistance of a conductor having length l area of cross section a and resistivity ρ is given as: a. ρa/l b. ρl/a c. ρla d. l/ρ...

HVAC Exam Questions with All Correct A The refrigerant in a condenser in a refrigeration system . - Answer-rejects heat The condenser in a refrigeration system . - Answer-Answer: All of the above A normally operating water-cooled condenser is operating with a 10°F differential between water in and water out. If scale forms on the water tubes and the entering water is 85°F, which of the following is possible? - Answer-d. Both a and b are correct. a. The outlet water temperatur...

HVAC Exam Questions with All Correct Answers The refrigerant in a condenser in a refrigeration system . - Answer-rejects heat The condenser in a refrigeration system . - Answer-Answer: All of the above A normally operating water-cooled condenser is operating with a 10°F differential between water in and water out. If scale forms on the water tubes and the entering water is 85°F, which of the following is possible? - Answer-d. Both a and b are correct. a. The outlet water temper...

A Level Physics Capacitors (Answers) Total Marks:/30 2022 AQA, Edexcel A Level Solution: 2 1. George wishes to explore the rules for multiple capacitors. To do this, he constructs a circuit using three: C1 is connected in series with C2; these are both connected in parallel with C3. All are connected to a 6 V power supply. C 1 = 10 μF, C 2 = 20 μF andC 3 = 50 μF . Total for Question 1: 13 (a) Explain in terms of the flow of electrons how a potential difference is built up across a ...

A 1000 KVA three phase transformer has a secondary voltage of 208/120. What is the secondary full load amperage? - Correct Answer A 1500 KVA three-phase transformer has a secondary voltage of 480/277. What is the secondary full load amperage - Correct Answer A conductor with 220 mils of insulation would have insulation thickness of: - Correct Answer 0.22" A current transformer has a rating of 4000:5. If 2000 amps load is on the primary, the secondary output would produce: -...

Airframe Electrical System Review Questions with Answers Graded A+ The insulation on aircraft wire is designed to withstand ___ volts. - Answers 600 ____-gauge wire is the smallest size aluminum wire recommended for use in aircraft electrical circuits. - Answers Eight The ____ ____ gauge is used to indicate the size of electrical wire. - Answers Common wire Wires must have an identification mark every ____ to ____ inches. - Answers 12, 15 When electrical wires are routed parallel to lines c...