Consider the structure below. The steel is infinitely permeable. Depth into the page is 0.5"; width w = 0.25". Coil 1 has 10 turns, coil 2 has 20 turns, and coil 3 has 30 turns. We will assume that x is small. Be sure to convert everything to meters.
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- A 30-volt electromotive force is applied to an ??-series circuit in which the inductance is 0.1 henry and the resistance is 50 ohms. Find the current ?(?) if ?(0) = 0. Determine the current as ? → ∞.Rigid metal conduit (RMC) is a threadable raceway of ____ designed for the physical protection and routing of conductors and cables. Select one: A. AN INCOMPRESSIBLE MATERIAL B. GALVANIZED STEEL C. VARIOUS BENDING RADII D. CIRCULAR CROSS SECTIONQ-1: Give brief answer to the following: (Answer Ten only)1) what is the potential transformer used for in power substation?2) what is process leads to lowering the number of free electrons?3) what is The Townsend’s Criterion4) why Sulphur Hexafluorid has good insulation strength?5) What is Intrinsic Breakdown6) why do bubbles lead to breakdown of liquid?7) how to decease the ripple voltage of cockroft-walton voltage multiplier circuit8) how much the maximum charging current of A Van de Graaff generator has a beltwidth 1 m, a belt speed of 4 m/s, and charge density of 10 c/m29) Why does need for Reactive Power Compensation in test transformer?10) The output voltage of series resonant circuit is given by the formula _________11) what is impulse voltage and what is its standard wave shape?12) Which advice can measure impulse voltage?
- To a magnetic core, with a relative permeability of 2100, a current I1 of 1 A and a current I2 of 2 A are applied, where the number of turns of the winding is 1000. The depth of the magnetic core is 20 cm. take into account that the bounded measurements are given in centimeters. The air gap shown in the figure is 0.2 cm and has an effective area equivalent to 1.1 times the cross-sectional area of the core. Determine:a) The equivalent circuit with sources and reluctance (Graph it)b) The magnetic flux of the central columnc) Magnetic induction at point Ad) Explain what would happen if the flow of current I1 is reversedA. It took a heater of 2 KW 158 minutesto raise by 30°C the temperature of water in an industrial vessel. How many gallons of water are inside the vessel? A. 30 gallons B. 10 gallons C. 40 gallons D. 20 gallons B.The ohmic resistance of a large magnetic contactor is measured to be 20 ohms. A 230 V is impressed on the contactor and the current is taken as 3.2 amperes. Neglecting core loss, determine the inductance of the contactor in mH. A. 261 B. 183 C. 315 D. 2511... Why do we use round-shaped coils (I.e., Round shaped turns in the coils) in both the primary and secondary circuits [If those coils were not round-shaped, what would be the problem]? Must show the draw figures 2.... Write down major differences between conducting and displacement current densities with proper figures.
- Consider a ferromagnetic ring (nucleus) that has a mean circumference of 40 cm, 300coiled copper turns and a sectional area of 5 cm2. A current of 2 is appliedA to winding, producing a flux of 1.5 mWb.Determine the permeability of the core material.Determine the relative permeability of the core material.If the ferromagnetic ring has an air gap of 2 mm. Find the required MMFso that the flux density in the gap is 0.5 T.Bar type CT has the following parameters:CT ratio = 2000/5 AMaximum primary current = 40 kAMaximum flux density in the core = 1.6 TImpedance (Actual burden) = 0.31 ΩCore cross sectional area = 20 cm2Find the maximum burden permissible if no saturation occurs.6. The unit of force is the newton (N) and work is measured in netwon-meters (N- m), which is also the unit of energy. Alternatively, energy is expressed in joule ( J ), where 1 J = 1 N· m. Determine the work done in moving a 50-μC electric charge (Q) through a distance of 50 cm in the direction of a uniform electric field (E) of 50 kV/m, if the force F is given by f= QE.
- The figure of merit which describes the overall behavior of the wire under stress isdetermined from?Select onea elastic modulus b gauge resistancegauge factorastic factorTwo long straight current-carrying wires are lined up parallel to one another in vacuum at a distancedCurrents of I1 and flow I2 through the wires, both in the same direction generating the field of B Delta f at a midpoint between themWrite down an expression for BM in terms of the currents running in each of the wires Assume vacuum permeability u= 1السؤال Electric flux that streams away symmetrically from a point charge and is coincident with the streamlines and to visualize this flux wherever an electric field is present. الاجابات True False