Methods of protection agains lightning.
Q: The Voltage between the contacts during the arcing period is Land is just sufficient to_ O a. Very…
A: Vacuum circuit breaker. Vacuum circuit breaker has minimum gap between fix and moving contact.
Q: A motor starter contains protection devices to prevent an overcurrent condition in the motor's…
A:
Q: Difference in circuit breakerand isolator.
A: Isolator is also known as the disconnector. As the name suggest they are the isolating switches…
Q: What will happen to the fan if the rating of the fuse is 4A? Explain How does the resistance…
A: Resistors, inductors and capacitors form an integral part of any electrical circuit. A source,…
Q: Difference between circuit breaker and fuse...
A: Fuse- Fuse is used for the safety purpose of home equipment. It operates the over-current protection…
Q: At standstill condition, the back emf is zero, so the motor should be safely turned ON with the help…
A: Choose the correct statement At standstill conditions, the back emf is zero so the motor should be…
Q: Fuses and circuit breakers are used in electrical circuits to prevent power overload that can cause…
A:
Q: The protective devices, such as ground wires, lightning arrestors, circuit breakers, relays are used…
A: The protective devices like relays, circuit breakers etc. are used to protect the equipment of power…
Q: Electric shock happens when an electric current flows through the Human body Circuits Conductor…
A: Need to find Electric shock happens when an electric current flows through the what?
Q: 2. In what conditions will the thyristor continue conducting? How to turn off the thyristor?
A: Condition in which thyristor will continue conducting : The main condition for a thyristor to be…
Q: iii) full load rot
A:
Q: What Is the opposite of redistance
A: Resistance R The property which is oppose flow of charge carriers( electrons ) .the element is…
Q: The given system has accuracy.
A: We need to tell about accuracy of given system.
Q: explain what happened as the lamp load (serial no) gets increases.
A: An experimental connection diagram is shown in the question. It is done to study the Load…
Q: Explain in details, why the ceiling fan rotates counterclockwise and the standing fan, clockwise.
A: consider the given question;
Q: GFCIS protect against ground faults and AFCIS protect against Check all that apply. electrical fires…
A: GFCI and AFCI are protecting circuits used in electrical installation.
Q: Question No.11. Which of the following best describe the arrow A shown in welding diagram below…
A: In the shown in the figure Best describe the arrow in welding diagram?
Q: Three separate neutral conductors are installed to reduce the possibility of a conductor overheating…
A: Three separate neutral conductors are installed to reduce the possibility of a conductor overheating…
Q: The primary function of a fuse is to A. Open the circuit B. Protect the appliance C. Protect the…
A: Fuse: It is an electrical safety device. It is used to break heavy short circuit current. It is…
Q: Differentiate the mechanism of electrical breakdown thet occurs in liquid and solid insulation.
A:
Q: Which among the following is not a protective device а. Isolator switch b. Circuit breaker С. C…
A: which among the following is not a protective device? a) isolator switch b) circuit breaker c)…
Q: What are different types of fault in electrical power system
A: The fault in the power system is expressed as the any unwanted or abnormal condition of the system…
Q: combinations of switches
A:
Q: STUDENT DRILL PROBLEMS: Draw the basic building blocks of the following systems. Explain briefly the…
A: The Building block diagram is the summary representation of any system in which the energy flow and…
Q: What is factor of a cable at 5 degrees celcius when calculating resistance
A: The solution is provided in the following section.
Q: Zener breakdown takes place due to 1. Direct rupture of covalent bonds,
A: Zener diodes are highly doped P-N junction diode with main difference with conventional Si diode is…
Q: are used to prevent over-current from entering into electrical equipment. O a. MCB & Fuse O b. MCB &…
A: MCB stands for Miniature circuit breaker. ELCB stands for Earth leakage circuit breaker. RCCB stands…
Q: how hydropower water turbine energy refinement is essential in dry season
A: The Given is related to fluid mechanics and hydraulic machinery.
Q: a brief reflection on ELECTRICAL MEASUREMENT UNITS
A: Measurement is the act of finding an unknown physical quantity by using a standard quantity. The…
Q: 24. Which of the following is not one of the technical reasons for grounding the starpoint ? a)…
A: According to question: For Limiting inductive interference between power and communication…
Q: Setting the voltage amount to 50 and the number of winds/turns to 20. Afterwards, increase the…
A: We know that, Voltage is directly proportional to number of turns Using this condition let's solve…
Q: lightning protection.
A:
Q: Electrical hazards include electrical arcs, blasts, and broken or faulty equipment. a. Polished O b.…
A: The correct option is shock.
Q: True or False
A:
Q: . What's the primary instrument for locating a break in a cable during emergency maintenance? A. OSA…
A: In this question we need to choose a correct option
Q: f. If the lower sphere is replaced with a sharp needle, is the breakdown voltage going to be higher…
A: Here it is asking that if the lower sphere is replaced with a sharp needle then what will happen to…
Q: Q.3. Give two reasons for overloading and two reasons for short circuit and two precautions to…
A: Two reasons for Overloading: When, the live and neutral wires come in direct contact with each…
Q: Discuss the arcing phenomenon in a circuit breaker
A: Arcing phenomenon in a circuit breaker
Q: Explain the electrical scenarios briefly 1. Circuit breaker keeps tripping 2. Frequent bulb…
A: Circuit breaker keeps tripping : If the circuit breaker keeps tripping it means there is some fault…
Q: Choose the correct answer 1)Switches are generally rated by their : A) Maximum Voltage B) Minimum…
A: Problem on basic electronics subject . Below is the explaination.
Q: Discuss any two types of the lightning arresters. Please don’t handwringing
A: Lightning arresters are used to protect the electrical equipment ( installed in open space ) from…
Q: Choose the correct option:Zener breakdown takes place due to 1. Direct rupture of covalent bonds, 2.…
A: To choose the correct option regarding zener breakdown
Q: ENUMERATION. List down or enumerate what are asked for in each number. 1. Common types of light…
A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…
Q: Discuss the types of oil circuit breakers. Please write more answer
A:
Q: State and explain 5 principles of finding fault
A: to State and explain 5 principles of finding fault
Q: For the inductive proximity switch shown below define the voltage level of the black colored wire…
A: 1) we can see 25 V supply given to sensor. Also from given we can see inductive sensor work below…
Q: What would be the ground fault/ short circuit protection using an inverse time circuit breaker for…
A: Given: 240 V 5 hp motor with 75 degree Celsius temperature.
Q: 3. The disconnecting means for a 50 HP, 460 V, 30 motor shall have an ampere rating of at least а.…
A: In this question, Choose the correct option What is ampere rating of at least?
Q: Mention the difference between Zener and avalanche breakdown.
A: Breakdown takes place in reverse biased p-n junction diodes. During break down, the value of the…
Q: At standstill condition, the back emf is of maximum value, so the motor can be safely turned ON with…
A: Choose the correct option The given statement is At standstill, the back emf is of the maximum…
Methods of protection agains lightning.
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- I need answer frpm power electronics rulesA snubber circuit has snubber time constant (10 msec), voltage source (10 kV), discharge current of the Thyristor (5 µA) and frequency (50 Hz). Find the rate of voltage changing with time and snubber circuit power losses?Electric Powers System for Nonelectrical Professional can you explain the purpose of capactictors, reactrs, and static VAR compensators used in electric power systems
- 20/ Which Arc Extinction Method operates by keeping the Arc Resistance low until the Current becomes zero? A. High Resistance Method B. High Inductance Method C. Low Resistance Method D. Low Inductance Methodf. If the upper sphere fell down on ground by accident, and its shape became irregular with having some sharp edges, is the breakdown voltage going to be higher or lower or the same when using it again? Explain why.9. When making a high energy measurement: a. Attach the meter to the energized line first, then to ground. b. Attach the meter to ground first, then to the energized line. c. Attach both meter leads concurrently. d. Remove power completely, attach the meter, then restore power.
- A thundercloud has a negative charge, and an object on the ground has a positive charge. Will the lightning discharge be from the cloud to the ground or from the ground to the cloud?What Transient Voltage appears across the Circuit Breaker contacts at, or near Current Zero during the Arcing Period? O A. Arc Voltage O B. Recovery Voltage O C. Restriking Voltage O D. Critical Disruptive Voltage Co searchIn an energy meter, creep speed is the speed of the aluminium disc's at O a. Full load condition O b. Over load condition O c. Half load condition O d. None of the above
