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!
Calculate the following for a 2 hp and a 20 hp dc machine, each rated for 500 rpm. Use data from the Study Plan 1 data sheet, including "hot" armature resistance value for all calculations. Note that the value of K is proportional to the field flux, and the printed value is for rated (100%) flux. Both the load moment of inertia JL and the viscous friction coefficient B are zero unless stated otherwise.
a) Calculate the eigenvalues (real or complex) for operation at rated flux and at 50% of rated flux:
b) Calculate the dominant time constant τ of the 2 hp machine and the natural frequency ωN and damping factor ζ of the 20 hp machine (assume rated flux for both machines). Use them to determine the approximate percentage overshoot and settling time (within 2%) for the rotor speed's natural response for each machine following a step change in the armature voltage. Assume zero load inertia. Plot the transient response of the rotor speed ω (in rpm) for both machines for a step in the armature voltage from 50% to 100% rated voltage, assuming no steady-state load torque (i.e., TL=0) and an initial rotor speed corresponding to the no-load speed at 50% rated voltage. Calculate the initial and final speed values for both machines.
c) Find the value of an external series resistance for both machines that will limit the steady-state stall current (i.e., speed = 0) with rated voltage to 125% of rated current. With this resistor in the circuit, repeat the eigenvalue calculation of part a) for both machines. Assume rated field flux. Plot the migration of 20 hp machine's eigenvalues (i.e., root locus) as the additional series resistance Radd is increased from 0 to its final value.
tension and sag problems
Quick ratio A stringent indicator that determines whether a firm has enough short-term assets to cover its immediate liabilities without selling inventory. It is calculated as
Explain n - Type semiconductor. n - Type semiconductor:- (i) If small amount of pentavalent impurity is added with, to a pure semiconductor giving a large number of free
how to break a signal into time components
Hello may i know if it is possible for me to teach online on electrical maters?
Explain relative data addressing mode (with examples) available in microprocessors. Relative Mode: Operand supplied is an offset, not the actual address. Added the con
The following four output displays of an oscilloscope (right hand side, below) show waveforms of a biased diode ac circuit. An example is illustrated on the left hand side. VIN is
Question: a) For the circuits shown in figure a and in figure b, show the output voltage waveform V0(t) if a sinusoidal signal with peak value of 5V is applied and the dc suppl
List the various addressing modes present in 8086? There are 12 addressing modes are present in 8086. They are, (a) Register and immediate addressing modes _ Register ad
Define Sigma-Delta Analog to Digital Converters? Sigma-Delta ADCs have the benefit of being implemented almost totally in the digital domain. They are extremely reliable, high
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd