Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. A shunt generator gives full load output of 30 kW at a terminal voltage of 200V. The armature and field resistance are 0.05? and 50? resp.. The iron and friction losses are 1000 W. Calculate
(1) generated emf (2) copper losses (3) efficiency
Ans.
Given
V = 200 V, P = 30 × 103 W,Ra = 0.05 W, Rsh = 50 W
Pi+f = 1000 W
I = P/V = 30 × 103/200 = 150 Amp
Ish = V/Rsh = 200/50 = 4A
Ia = I +Ish = 150 + 4 = 154 Amp
(a) E = V + Ia Ra = 200 + 154 × 0.05 = 207.7 volt
(b) Copper losses = Ia2 Ra + Iash Rsh
= (154)2 × 0.05 + (4)2 × 50 = 1985.8w
(c) Efficiency ? = Output/ Output + Copper losses + iron losses + friction loss
= 30 × 103/30 × 103 + 1985.8 + 1000 = 90.95%
uses of ferromagnatic transformer
When both MT 2 and Gate are Negative In this case N 3 works as a remote gate. Current flows form layer P 2 to layer N 3 junction N 1 P 1 is reverse biased and it br
Q. Regions of operation in BJT ? Transistor find many applications like amplifier, switch etc. depending upon the polarity and the magnitude of the applied voltages across the
Control Signals There are two control signals and one special (ALE) in this category. All these signals are output signals. RD (Read signal ) it is an active low
angle of (1/1-ae^-jw)
what is reactivecpower
This is basically a simple senior design project where the professors are giving us a limited budget and providing us with an Arduino Board. (We can use rasberry pi, beagle bone, e
Limitations: 1. Silicon transistors do not function at voltages much higher than about 1,000 volts (SiC devices can be worked as high as 3,000 volts). In difference, electron
Calculate the monthly electric bill for TESTU. Metering is as follows: B 00,000 kWHr C 00,000 kVARHr D 0,000 kW peak demand Facilities Charge = $500
Q. Explain about Direct-current machines? Generally speaking, conventional dc generators are becoming obsolete and increasingly often are being replaced by solid-state rectifie
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd