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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.
which type of ic package is more advantageous,suitable and versatile
Write a program to count how many from your data set called MYDATA, which is a set of signed single-byte numbers, has positive value and are odd numbers. Save the result in POSOD
Simbulation
Conditional Call Instruction Similar to conditional jump instructions there are conditional call instructions also based on various flags.
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