Question

11000 W of electric power can be transmitted to a distant station at (a) 220 V...

11000 W of electric power can be transmitted to a distant station at (a) 220 V or (b) 22000 V. Find the current in secondary coil in both cases (a) and (b). Which of the two modes of power transmission should be preferred and why? Assume resistance of transmission line is ‘R’ used for power transmission. Support your answer with possible calculations.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
11000 W of electric power can be transmitted to a distant station at (a) 220 V...
11000 W of electric power can be transmitted to a distant station at (a) 220 V or (b) 22000 V. Find the current in secondary coil in both cases (a) and (b). Which of the two modes of power transmission should be preferred and why? Assume resistance of transmission line is ‘R’ used for power transmission. Support your answer with possible calculations.( 4 marks)
A power plant produces an rms voltage of Vp = 12.0 x 10^3 V and an...
A power plant produces an rms voltage of Vp = 12.0 x 10^3 V and an rms current of Ip = 180 A. The rms voltage is stepped up to 300 x 10^3 V by a transformer before it is transmitted to a substation. The resistance of the transmission line is between the power plant and the substation is R = 1000Ω. a) What is the turns ration Ns/Np for this transformer? b )What is the rms current in the...
32-2 Power transmission Why do power transmission lines use high voltage? An electric power station sends...
32-2 Power transmission Why do power transmission lines use high voltage? An electric power station sends out a fixed 40 MW of power. The cross-country power line wires from the power station to the city has a total resistance of 7 Ω. Assume the circuit consists of the power station, the line wire (resistor), the city (resistor), and a storage battery. Find the power loss (in kW) in the wires using a line voltage of a) 500 kV b) 20...
An AC power generator produces 54.5 A (rms) at 3630 V (rms). (a) Find the power...
An AC power generator produces 54.5 A (rms) at 3630 V (rms). (a) Find the power (kW) produced by this generator. (b) If this power is transmitted through a long-distance power line that has a resistance of 11.3 ohms, find the power (kW) dissipated as heat in the power line. If the voltage of the power generator is stepped up to 175 kV by an ideal transformer before being transmitted, find (c) the current (A) in the power line and...
The power supplied by a torque t to rotate an object to angular frequency w is...
The power supplied by a torque t to rotate an object to angular frequency w is p=tw. A common car engine produces t=300 Nm at w=3000 RPM (rotations per minute). Suppose you want to create an electric car that runs on battery and electric motor. Typically, electric car motors utilize a current of 100A and have a cros sectional area of 0.5 m2. Suppose also that the number of wire turns in the coil of the motor is N=100. Q1....
An electric generator is designed to produce a maximum emf of 220 V while rotating with...
An electric generator is designed to produce a maximum emf of 220 V while rotating with an angular speed of 3600 rpm. Each coil of the generator has an area of 0.027 m2. a.) If the magnetic field used in the generator has a magnitude of 0.050 T, how many turns of wire are needed? b.) During the rotation of the coils, the magnetic flux through the coils will alternately be increasing and decreasing. (Why?) While the flux is increasing,...
The resistivity of copper is 1.68 x 10-8 W-m.  The resistance per unit length (R/L) of a...
The resistivity of copper is 1.68 x 10-8 W-m.  The resistance per unit length (R/L) of a certain copper cable is 1.61 x 10-5W/m. (a) What is the cross sectional area of the cable? (b) The above cable is used to transmit electricity from a power station to an electrical substation 42.8 km distant.  If the voltage at the substation is 2480 V, what is the required voltage at the power station when the current running through the cable is 856 A?...
Problem 4 This problem has 3 parts. The power company wants to deliver electrical service of...
Problem 4 This problem has 3 parts. The power company wants to deliver electrical service of 110 volts plus or minus 5 yolts (105 to 115 volts), at 60 hertz frequency across a 10 kilometer transmission ine to a smal town. The transmission line voltage is 4,000 volts. There is a transformer availablo with a primary col of 15,000 turns and secondary coits of 82, 132, 164 and 187 turns. part a- Which, if any, of the secondary coils can...
The following test data apply to a 7.5-hp, three-phase, 220-V, 19-A,60-Hz, four-pole induction motor with a...
The following test data apply to a 7.5-hp, three-phase, 220-V, 19-A,60-Hz, four-pole induction motor with a double-squirrel-cage rotor of design class C (high-starting-torque, low-starting current type): Test 1: No-load test at 60 Hz; Applied voltage V = 219 V line-to-line; Average phase current I1,nl = 5.70 A; Power Pnl =380 W; Test 2: Blocked-rotor test at 15 Hz; Applied voltage V = 26.5 V line-to-line; Average phase current ll,bl = 18.57 A; Power Pbl = 675 W; Test 3: Average...
A heater dissipates 1900 W  of power when it is connected to a 100 V  battery. Part A...
A heater dissipates 1900 W  of power when it is connected to a 100 V  battery. Part A What current will flow through the heater when it is connected to the battery? Part B What is R, the resistance of the heater? Part C How long does it take to raise the temperature of the air in a good-sized living room that is 6.00 m  × 6.00 m  × 10.0 m by 10.0∘C? Note that the specific heat of air is 1006...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT