choose the correct answer 1. The maximum break down strength of air at 76 cm mercury pressure and temperature of 25 ºC is a. 30 V/cm b. 30 kV/cm c. 300 kV/cm 2. The installed capacity of a power station must be not.... a. Less b. equal c. more 3. Area under the daily load curve divided by 24 hour gives daily d. Non of them than the maximum demand. d. Non of them ......... .... a. average load in kW. b. maximum demand in kW. c. units generated in kwh. d. Non of them 4. In thermal power station, 5 kwh need to burn fuel has. a. 860 k.calorific. b. 1500 k.calorific c. 4300 k.calorific d. Non of them. 5. Francis and Kaplan turbines are used for .. heads. a. medium and high b. medium and low c. medium only. 6. For photo voltage cell, Fill factor is d. High only a. Vmpimp Uscise b. Vscisc Vmpimp c. Vmpimp d. Vscisc 7. Power available from wind mill is ვ. PA V² 1 b. -A V² 20 c. PA V³ d. pA V³

choose the correct answer 1. The maximum break down strength of air at 76 cm mercury pressure and temperature of 25 ºC is a. 30 V/cm b. 30 kV/cm c. 300 kV/cm 2. The installed capacity of a power station must be not.... a. Less b. equal c. more 3. Area under the daily load curve divided by 24 hour gives daily d. Non of them than the maximum demand. d. Non of them ......... .... a. average load in kW. b. maximum demand in kW. c. units generated in kwh. d. Non of them 4. In thermal power station, 5 kwh need to burn fuel has. a. 860 k.calorific. b. 1500 k.calorific c. 4300 k.calorific d. Non of them. 5. Francis and Kaplan turbines are used for .. heads. a. medium and high b. medium and low c. medium only. 6. For photo voltage cell, Fill factor is d. High only a. Vmpimp Uscise b. Vscisc Vmpimp c. Vmpimp d. Vscisc 7. Power available from wind mill is ვ. PA V² 1 b. -A V² 20 c. PA V³ d. pA V³

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 2.31P: Consider two interconnected voltage sources connected by a line of impedance Z=jX, as shown in...

See similar textbooks

Similar questions

A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and L=40mH. (a) Determine the power factor of the circuit and state whether it is lagging or leading. (b) Determine the real and reactive power absorbed by the load. (c) Calculate the peak magnetic energy Wint stored in the inductor by using the expression Wint=L(Irms)2 and check whether the reactive power Q=Wint is satisfied. (Note: The instantaneous magnetic energy storage fluctuates between zero and the peak energy. This energy must be sent twice each cycle to the load from the source by means of reactive power flows.)
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in , place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a, b, and c such that VAN is 90 out of phase with Va for positive sequence.
Id is : 510221
Please answer in typing format solution
A 500 MVA synchronous machine has H, = 5.6 MJ/MVA and a 1200 MVA machine has H₂ = 2.0 MJ/MVA. The two machines operate in parallel in a power station. What is the equivalent. H constant for the two, relative to a 100 MVA base?
I need help from an expert on how to draw a load curve, as there are two periods A and B with different loads and times. I need a detailed explanation of this process because it is difficult. Q1. A generation station of 3 MW supply a two regions A & B The line losses are neglected and the load variation of these regions is as follow: Region A (Time) From midnight to 5 a.m No-load From 8 a.m to From 5 am to Load (kw) 8 a.m 1200 11 a.m 800 Region B From From From (Time) midnight to 6 a.m to p.m to Load (kw) 6 a.m 400 3 p.m 7 p.m 900 No-load 1-Plot The daily load curve of the total system. From 11 a.m to 6p.m No-load From From 6 p.m to midnight 600 From 7 p.m to 9 p.m to 9 p.m midnight 1800 200
A generator operating at 50 Hz delivers 1 p.u. power to an infinite bus through a transmission circuit in which resistance is ignored. A fault takes place reducing the maximum power transferable to 0.5 p.u. Where as before the fault, this power was 2.5 p.u. and after the clearance of the fault, it is 2 p.u. The value of 8 is max
What is the purpose of power factor correction to a given load? O To reduce the amount of voltage to the load. O To reduce the amount of dependence on automated machinery. O To reduce the amount of current to the load. O To reduce the amount of resistance of the load.
I need the answer at 20 minute
Q4/For the three-phase power network shown in Figure. the various components are: GI: 100 MVA, 0.30 pu reactance. G2: 60 MVA, 0.18 pu reactance. Transformers (cach): 50 MVA, 0.10 pu reactance. Inductive reactor X: 0.20 pu on a base of 100 MVA. Lines (each): 80 ohms (reactive); neglect resistance. with the network initially unloaded and a line voltage of 110 kV, a symmetrical short circuit occurs at midpoint E of line 2. Calculate the short circuit MVA to be interrupted by the circuit breakers A and B at the ends of the line. T3 38 L1 L2 G2 Bas 12 T4 Bus
Q4. The source current in the circuit shown is in Figure 3a) What impedance should be connected across terminals a,b for maximum average powertransfer?b) What is the average power transferred to the impedance in (a)?c) Assume that the load is restricted to pure resistance. What size resistor connected across a,bwill result in the maximum average power transferred?d) What is the average power transferred to the resistor in (c)?v
A 500 kVA, 1100 V, 50 hz, wye-connected 3-phasehas armature resistance of 0.1 02/phase and synchronous reactance/phase of 1.502. (i) What is voltage regulation if the load pf is 0.9 lagging ? (ii) what is voltage regulation if the load pf is 0.8 leading?