Analyze why an over current protection fail to operation under all operating condition and hence explain the operating principle of distance relay and show that this relay can work faithfully under all operating condition.

Q: The switch in the R-C circuit shown is initially set to position A which the capacitor charges up.…

A: Given that: V=20 VR1=2 kΩ=2000 ΩR2=5 kΩ=5000ΩC=5μF=5×10-6 F

Q: A resistor, capacitor, switch, and ideal battery are in series. Originally the capacitor is…

A:

Q: The electricity supplied through a city power line is transmitted at 14,300 V. On each city block…

A: Given  Primary voltage, V1 = 14300 V  Secondary voltage, V2= 120 V  No of turns in primary coil, N1…

Q: Here, an infinite constant current travels to the right. There are 3 independent single loops of…

A: Given, Here, an infinite constant current travels to the right. There are 3 independent single loops…

Q: The wiring in a motor has resistance of 3.0- Q and produces a back emf of 3.0-V when connected to a…

A: Given that,Resistance : R = 3 (Ohm)Back emf = 3 (V)EMF = 9 (V)Here we need to find the current flow…

Q: draws a current of 20.0 A from a 240 V power source 15.0 m away. What is the minimum cross-sectional…

A: Given:-  An electric motor draws a current of I =  20.0 A from a  240 V power source d =  15.0 m…

Q: A wire 2 m long moves perpendicular through a 0.08 T field at a speed of 7 m/s. What EMF is induced?…

A: Given that, The length of the wire is l=2 m Magnetic field, B=0.08 T Speed, v=7 m/s Resistance,…

Q: Calculate the peak voltage of a generator that rotates its 1000-turn, 0.100 m diameter coil at 5000…

A: Given that the value of magnetic field and given the number of turns and diameter of coil and speed…

Q: der these three circuits. 100 Hz 2 µH

A: AC Voltage across an Inductor Let us consider an ac source of amplitude εo and frequency ω is…

Q: You wish to invent a sparker for lightning gas burners. A 1.5-A current from a battery runs through…

A:

Q: -b-

A:

Q: How can a color- blind person determine the value of a resistor, using only the color code?

A: In this question we have to answer how can a color- blind person determine the value of a resistor,…

Q: A 3.0-AA current caused by moving electrons flows through a wire. The same number of water…

A:

Q: As shown below, a wire loop is immersed in a 0.8 T B-field (the direction of the field is shown in…

A:

Q: Integrated Concepts Hydroelectric generators (see Figure 20.43) at Hoover Dam produce a maximum…

A: a) The expression for output power is P=VI Substitute values in the above equation…

Q: What is the advantage of placing the two insulated electric wires carrying ac close together or even…

A: 2 wires are insulated from each other. They are carrying ac that is alternate current. We know that…

Q: Consider a DC circuit that has a battery, a switch, a resistor, and a capacitor connected in series.…

A: Displacement current: Id=εodϕEdt So when the electric flux changes through the capacitor plates, we…

Q: What is the energy density at the center of a circular loop of wire carrying a 26.0 A current if the…

A:

Q: Consider a transformer, used to recharge rechargeable flashlight batteries, that has 500 turns in…

A:

Q: Consider a transformer, used to recharge rechargeable flashlight batteries, that has 500 turns in…

A:

Q: What direct current will produce the same amount of thermal energy, in a particular resistor, as an…

A: The power dissipated in a resistor connected to an AC source is, Pavg=I2rmsRthen, Pavg=I2R2 the…

Q: What is the voltage output (in V) of a transformer used for rechargeable flashlight batteries, if…

A: (a)Write the relation between turns of winding and voltage between primary and secondary winding.

Q: has calls with a resistance of 25 ohm operates from a voltage of 238 V. When the mc s operating at…

A: An electric current is a stream of charged particles, such as electrons or ions, moving through an…

Q: In what three ways can the strength of an induced current be increased?

A: Explanation: Induced Current(emf):       When the conducting loop or coil of wire is placed in a…

Q: Figure 3 shows a transformers consists of soft-iron core, coils X and Y. When a 240 V power supply…

A: Let he number of turns in coils X and Y be N1 and N2. Similarly, the voltage and currents be V1 and…

Q: This LR circuit has time constant named tau, T, and maximum current, If = V/R . Which one of the…

A:

Q: A ground-fault interrupter in an electric outlet prevents injuries because it contains an electronic…

A: Given that " a ground-fault interrupter in an electric outlet prevents injuries because it contains…

Q: The current in the RL circuit shown below reaches half its maximum value in 0.5 ms after the switch…

A:

Q: The plug-in transformer for a laptop computer puts out 7.50 V and can supply a maximum current of…

A: Given: Output voltage Vo=7.50 V, Output current Io=1.8 A, Input voltage Vp=240 V. Required: Input…

Q: What voltage is induced in a 1.00 m diameter loop 50.0 m from a 2.00 X 106 A lightning strike, if…

A: The radius of a loop is, The distance of the loop from the lightning strike is, The induced…

Q: A 7.50 nF capacitor is charged to 12.0 V, then disconnectedfrom the power supply and connected in…

A: Using the principle of capacitance Q =CVQ = charge of the capacitor C =capacitanceV= voltage given…

Q: In the circuit shown, the switch S is closed at time t=0. a) Find the current in the 100 2 resistor…

A:

Q: A DC servo motor produces 10 milli N-m torque (Tm) with current (im) of 0.25 A with a DC supply (vm)…

A: Concept used: Slope of torque-current curve gives torque constant. Relationship between motor's back…

Q: What is the peak current through a 1200 W microwave oven operating at 120-V AC?

A: Power of microwave (P) = 1200 W Operating voltage (Vrms) = 120 V

Q: Integrated Concepts Hydroelectric generators (see Figure) at Hoover Dam produce a maximum current of…

A: (a) The power output is given by, Pout=IV Here, I is the current and V is the voltage. Substituting,…

Q: A wire 2 m long moves perpendicular through a 0.08 T field at a speed of 7 m/s. What EMF is induced?…

A: Answer: Given, Length of wire is L=2 m Speed of wire is V=7 m/s Magnetic field is ,B=0.08 T Also…