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!
Consider the 220-V, 1800-r/min dc motor, controlled by a three-phase fully controlled rectifier from a 60-Hz ac source. The armature-circuit resistance and inductance are 1.5 and 30 mH, respectively.
(a) When the motor is operating in continuous conduction, find the ac source voltage required to get rated voltage across the motor terminals.
(b) With the ac source voltage obtained in part (a), compute the motor speed corresponding to α = 60° and Ta = 25 N·m assuming continuous conduction.
(c) Let the motor drive a load whose torque is constant and independent of speed. The minimum value of the load torque is 1.2 N·m.
Calculate the inductance that must be added to the armature circuit to get continuous conduction for all operating points, given that ψ = tan-1 (ωLa/Ra) = 1.5 rad, Tan > 0.006, and all points on the Tan-ωmn plane lie to the right of the boundary between continuous and discontinuous conductions.
1. The circuit below will be most efficiently analyzed by obtaining the Thevenin equivalent circuit for the circuit to the left of the points (a-b) on the schematic. The capacitor
AC and DC distribution onboard ships
Q. Effect of feedback on dynamic response and bandwidth? Let us consider the block-diagram representation of the open-loop system shown in Figure 16.2.5(a), whose direct transf
Question : a) Embedded Systems will be Hard Real-Time Systems, Soft Real-Time Systems and Hybrid Real-Time Systems. Briefly explain all three types of Real-Time Systems, using
if JK flip flop has 1600hz frequency .then what is the input frequency?
What do you mean by Circuit Analysis Techniques? One simplifying technique often used in complex circuit problems is that of breaking the circuit into pieces of manageable
Q. (a) Show by applying Ampere's circuital law that themagnetic field associated with a long straight, current-carrying wire is given by B φ = µ 0 I/(2πr), where the subscript φ d
Q. Binary Coded Decimal Addition Now as in conventional decimal addition, Binary Coded Decimal addition is performed one decimal digit at a time. What happens when the sum g
Q. Give applications of emitter follower The emitter follower has the following principal applications: 1. To provide current amplification with no voltage gain 2. Impede
Q. (a) In the circuit shown in Figure the zener diode (with zero zener resistance) operates in its reverse breakdown region while the voltage across it is held constant at VZ and t
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