a I1 620°A V.0790 212 20 I4 I3 ell ji2 b 10 20 420°A -j207 Is I2 e

Q: 22/ According to Lenz’s law negative sign indicates that induced EMF opposes the change in flux…

A: According to Lenz’s law negative sign indicates that induced EMF opposes the change in flux linkages…

Q: length of 7 cm and cross section of 0.001 .and permeability of 0.01885 Wb/A.turns.m اختر أحد…

A: Effective thickness l=7 cm = 0.07 m. Cross sectional area a=0.001 m2. Magnetic permeability…

Q: 2. Utilities may use the Open-Wye/Open-Delta connection for three-phase transformers when…

A: a) Determine the voltages, here it is tapped at 12: Van=-VAN×240120×12=-12.47 kV (negative sign due…

Q: Hiw.si-A-skeel.Fod.im. Long. and. lomm* 20-mm.incross Section.is..subjecked..to atensile…

A: According to the question we have to find the value of elongation of the rod.

Q: For the ideal transformer circuit of figure shown below, find (a) 1₁ and 12: (b) V₁, V2 and Va the…

A:

Q: sinco so l0d) ideal transformer M:05 Vi amplitnate is Sovi icoHz. Li=0.4H Lo=o.5H tind VR, in time…

A: The ideal transformer in the above figure is converted into the T- circuit model

Q: uèstion 7 A shunt generator running at 1000 r.p.m. has generated e.m.f. as 300 V. If the speed…

A: In this question, choose the correct option What is emf at speed = 1200rpm

Q: Topic:  Kirchhoff’s Voltage Law and Current Law What will be the effect upon the solution of a…

A: The arbitrary consideration of direction of the  current has no affect on  MAGNITUDES of any other…

Q: In transformers, the flux lost in the air is called nd as SKW. If th

A: There are two types of flux in trabsformer, namely, Linkage flux Leakage flux

Q: H.W: The following data relates to the basic AC bridge under balance condition ZI = 80 260"; 22 =…

A: We need to find out unknown impedance for balanced bridge

Q: Q1:B: How to solve the commutation problem in de machines

A: Need to explain how to solve commutation problem in DC machine

Q: For the ferromagnetic core shown in the gure below draw the magnetic circut for the core. The…

A: Note: Flux in the series circuit remain same Flux in parallel circuit changes based on reluctance…

Q: A small 60 Hz single-phase transformer has 12.954 watts at no load. The core has a volume of 952.5…

A:

Q: How do you realize a subtractor using full adder?

A: as per the guidelines we need to solve  only first question. we need to design full subtractor using…

Q: Two coils wound on a common core have L1=0.2 H, L2=0.5 H, and M=0.1 H. The currents are…

A: Given data, The value of inductor L1 = 0.2 H. The value of inductor L2 = 0.5 H. The value for…

Q: For dc machines, the series field windings have many turns of fine wire true False

A: For a DC machine series field winding contains less number of turns with thick wire, having least…

Q: flux of 0.5 Weber flows through a core with a total reluctance of 60,000 ampere-turns/Weber. How…

A:

Q: True or False: In a DC Machine, the field windings can only be found at the Stator

A: In DC motor the field winding is on the stator of the motor and the armature winding is on the rptpr…

Q: For the magnetic grip circuit in the figure, create the environment equations in matrix form using…

A: We apply the mesh analysis in the given circuit to formulate current equations.

Q: Prove that the primary and secondary E.M.F. lag behind the flux by 90 degree. ha?

A: ''Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Write down the differential equations describing the loop currents of the given circuit. Assume…

A:

Q: A 400/230V, 50Hz, single phase  transformer has 200 turns on high  voltage side. Find turns ratio,…

A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…

Q: The magnetization current of transformer depends on: Select one:

A: The magnetization currrent of transformer depends on

Q: 17   By laminating the core, the Hysteresis losses can be reduced. Select one: True False

A: Given that By laminating the core, the Hysteresis losses can be reduced

Q: In the system shown in Figure 1, the transformers are connected star-star with both star points…

A: It is given that: MVAbase=15XT1=XT2=XT3=0.04 pu

Q: For dc machines, the series field windings have many turns of fine wire true False

A:

Q: 56. Determine the general solutions for the currents /1, /2, and Iz if R1 = R2 = R3 = 4 ohms and L1…

A: Let V = 1 V. Write the KVL expression for the left loop. V(s)=R1I1s+I2R2s+sL1I1s1s=4+2sI1s+4I2s…

Q: In a DC machine, the reversal of currentrom one direction to opposite direction is done by O…

A: In this we will write about reversal of current in dc machine....

Q: Volt ac voltage is applied to the primary input of a transformer. A load of B ohms at the output it…

A:

Q: Why do we have horizontal and vertical lines in a breadboard, and what are the advantages of these…

A: The breadboard vertical lines and horizontal lines have no relation to do with Kirchhoff's and ohms…

Q: The voltage per winding of the 220V/12V, 60 Hz single phase core transformer is 1V. If the maximum…

A:

Q: In transformer, the eddy current loss depends on both frequency and flux density load current only…

A: The circulating current produced in the body of the magnetic material when it is subjected to an…

Q: A transformer is needed that will cause resista nce of 252 to appear a 240 Vyms. an actual load 100R…

A: a)Given

Q: 11) Which phenomenon is used in transformer to change the values of alternating voltages and…

A: Given that Which phenomenon is used in transformer to change the values of alternating voltages and…

Q: The leakage flux passes through the primary winding but not in the secondary winding and vise-versa

A: The leakage flux passes through the primary winding but not in the secondary winding and viceversa

Q: A. Draw the extemal characteristics curves series de generators.

A: Please find the attachment below

Q: By referring to Lenz’s Law, with aids of drawing, discuss the induced current process in magnetic…

A: According to Lenz's law, the induced current opposes the changing magnetic flux through the loop. As…

Q: In a certain magnetic circuit, the core is represented two reluctances as shown below. Assume a…

A: The magnetic circuit diagram is shown below, Number of turns, N=640 turns.Current, I=2.2 A.

Q: In the transformer circuit below, a load of 2.5cis 20° Ohms is connected to the output terminals of…

A:

KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.