IS required to maintain a loading of 5 kW in a heating unit. At an initial temperature of 15 C°, a voltage of 200 V is necessary for this purpose. When the unit is settled down to a steady temperature, a voltage of 220 V is required to maintain the same oading. Estimate the final temperature of the heating element, if the resistance emperature coefficient of the heating element is 0.0006 ner C° at 0 C

IS required to maintain a loading of 5 kW in a heating unit. At an initial temperature of 15 C°, a voltage of 200 V is necessary for this purpose. When the unit is settled down to a steady temperature, a voltage of 220 V is required to maintain the same oading. Estimate the final temperature of the heating element, if the resistance emperature coefficient of the heating element is 0.0006 ner C° at 0 C

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and...

See similar textbooks

Similar questions

Discuss the prime mover and the conversion of power energy for thermal station
In the circuit in Figure 2, the capacitor andThe circuit of resistance is defined as a load circuit.a) Find the average power dissipated by the load circuit?b) How much of the average power calculated in a) by the resistance in the load circuit and how muchspent by the capacitor? Interpreting the results obtained?c) In the circuit in Figure 2, with a resistance of 80 ohms 23?A coil of is connected in series. In this case,calculating transformer ratio () to optimize power delivery to the load? Obtainedinterpreting the result?d) Calculate the distributed load complex power and reactive power in the newly learned circuit?
13. At what amperage differences will a GFCI trip? 14. What do DC and AC stand for? 15. True or False: An electron holds a positive charge
A 120 V, 60 W lamp is to be operated on 220 V, 50 Hz supply mains. For the lamp to operate in correct voltage, calculate the value of (i) non-inductive resistance and (ii) pure inductance (U.P.T.U. 2005–06)
8. Liquids with solid impurities a) Have higher dielectrie strength b) Of large size have higher dielectric strength c) Have lower dielectric strength as compared to pure liquids d) None of the above 9. Peak to peak ripple is defined as a) the difference between average de voltage and peak value b) the difference between maximum and minimum de voltage c) the difference between maximum ac and average dc voltages d) the difference between ac (rms) and average de voltages 10. In a Cockroft-Walton circuit, input voltage 100 kV load current 25 mA, supply frequency 100 Hz, each capacitor 10 nF. The optimum no. of stages for maximum output voltage is a) 1 b) 2 c) 10 d) 35
Discuss the relationship between voltage break down and humidity, temperature and distance explain with curve
A 6 ampere supply has a frequency of 25 Hz. Find the instantaneous value of current a. at 0.00986sec from zero going to the positive direction. b. at 0.00986 sec from zero going to the negative direction. c. at 986 degrees. Show complete solutions.
1/ Suppose that there are two types of H.V.T.Ls operating at the same voltage and carrying the same current, but one of them with smooth shapewhile the other with standard shape. Which of them, you will choose? a. choosing the smooth one. b. choosing the standard one. c. choosing the one with hollow construction shape. d. all these answers are wrong. 2/ As the ambient temperature in crease the disruptive critical voltage of coron a is: a. Decreased b. Increased c. No effect d. All these answers are wrong. 3/ Using HV underground cable improvevoltageprofile and power factor in any loaded inductive electrical grid because. a. Due to its inductive power effect. b. Due to resistive Effect. c. Due to its capacitive power effect. d. All of the above answers are wrong.
3) Resistor is used as load in the circuit below. T1 and T4 thyristor is triggered at 30 degrees, T2 and T3 thyristor is triggered at 210 degrees. The effective voltage of the AC voltage applied to the circuit is 120 V. a) Draw the graph of the voltage on the load resistor.b) Neglect the voltage drop across the thyristors and find the average value of the load voltage.
A circuit consists of an AC voltage source, a 10-ohm resistor, and a capacitor, all connected in series. The magnitude of the impedance of the capacitor is also 10 ohms. Which of the following is true about the source voltage and the current through the circuit? a. Insufficient information is given. b. The source voltage will lag the current. c. The source voltage will lead the current. d. The source voltage will be in-phase with the current.
Briefly explain environmental issues in regard to thermal power plants
The 3-phase half-wave rectifier given in the figure is connected to 3-phase 380 380 V 50 Hz network and feeds 20 Ω ohmic load. Plot the average value of the current flowing through the load and the waveform (vdc) of the voltage across the load on the dashed curves given.