Describe the shape of the most prominent features visible on

The protection against direct lightning strokes and high voltage steep waves is provided by a. Earthing of neutral b. Lightning arresters and ground wires c. Lightning arresters d. Ground wires

Magnetic Tape Recording Explain briefly the mechanism of Magnetic Tape Recording and how is induced electromagnetism applied in such.   Magnetic Levitation (MagLev) Traing Explain briefly the mechanism of Magnetic Levitation (MagLev) Train and how is induced electromagnetism applied in such.   Ground Fault Interrupter Explain briefly the mechanism of Ground Fault Interrupter and how is Faraday’s Law applied in such.   Induction Stove Explain briefly the mechanism of Induction Stove and how is Faraday’s Law applied in such.   Explain short and concise. Thank you.

In the field circuit model of a DC machine, a variable _____ is usually inserted in series with the field winding to vary/control the _____ that flows through that circuit. A resistor, voltage B resistor, current C inductor, current D inductor, voltage

2. Which of the symbols in Figure A6 represents a circuit breaker with thermal overload protection?A. CB. DC. AD. B

Explain why voltage spikes and surges are occurrences. high-frequency

What are the differences between natural fractures and induced fractures on the core? a) Surfaces of induced fractures are smooth and for natural fractures are not smooth b) Natural fractures are in similar direction but induced fractures are in different directions 4 c) Induced fractures are open but natural fractures are usually filled d) Induced fractures are normal to the core axis

O Blackboard Remaining Time: 18 minutes, 22 seconds. * Question Completion Status: QUESTION 5 E-08, PC-03. The effective value of a sine wave is equal to 100% of peak voltage 0.707 of peak voltage 0.636 of peak voltage QUESTION 6 E-08, PC-04. The frequency of domestic power supply in the UAE is 50 Hz 60 Hz 240 Hz QUESTION 7 E-08, PC-04. The term vector and the term phasor are giving the information of? Velocity. Amplitude and Velocity. Amplitude. Click Save and Submit to save and submit. Click Save All Answers to save all answers.

I need the answer as soon as possible

What is ripple?

Choose correctly answer?

E-06, PC-05. Why are the iron cores of most induction coils laminated? To increase the core permeability. To reduce the core reluctance. To reduce the effects of eddy currents. Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Air 吕0 F2 F3 F4 F5 $4 & 4 5 O 6 7 7 W .. E R .... S » D S F G # 3

Solve the following problems completely. Box your final answer/s. Rounding off should only be done on your final answers with four decimal places only. Use engineering lettering and avoid erasures. 1. A 60 cycle current has a maximum value of 6.5A. What will be the instantaneous value of current at (a)0.0035 sec after the wave passes through zero in a positive direction (b)0.01153 sec after the wave passes through zero in a positive direction 2. A sinusoidal voltage having a effective value of 120V is impressed across a 50 ohms resistor. Calculate the rms and maximum value of current. 3.Calculate the average voltage induced in a coil of 300 turns through which the flux changes from 250,000 to 20,000 maxwells in 0.15 sec.

Analyze and discuss different types of Air blast circuit breakers. Explain with the help of neat and clean diagram the working of axial blast circuit breakers. Also comment on the function of series isolator in this type circuit breaker.

What is the significance of fault analysis in a power system, and how is it performed?

Calculate the reactance voltage for a machine which runs at 900rpm number of commutator segments is 65, brush width is 1.74 (in commutator segments), coefficient of self induction is 153 the conductor current is 27A.

i need the answer quickly

A commutator segment has 556 segments. Indicate whether or not the winding is possible; triplex wave for 6 poles.

Total core loss is also called as Select one: O a. Magnetic loss O b.Copper loss O C. Eddy current loss O d. Hysteresis loss

Looking at several older cars that are showing initial signs of rust formation, where do you expect to find the most rust? What does these observations imply about corrosion?

Difference in isolator and circuit breaker in short.

A 10-Pole, quadruplex wave winding machine will have a parallel path equal to___

f. 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.

For 4 pole d.c machine armature winding with a double layer progressive simplex wave winding with 23 number of slots answer the following: a How many coils are present? b What is the coil span in terms of number of slots? c What is commutator pitch in terms of commutator segments? d How many coils are there between two consecutive commutator segments? e How many parallel paths are present?

Discuss the concept of an Electrical fault. How can we prevent such catastrophic incidentfor such fault in an electrical system?