A dc, separately excited motor has an armature resistance of 1 ? and field constant K? = 3 Vs. The motor is driven by a full-wave, ac/dc, SCR circuit. The triggering angle of the SCRs is 30o . The voltage on the ac side is 277 V (rms). The motor load is bidirectional and equals 120 Nm at steady state, regardless of the direction of rotation. A countercurrent braking is implemented by reversing the polarities of the motor terminals. The triggering angle of the SCRs is adjusted so that the maximum braking current is twice the steady-state value. Calculate the new steady-state speed.
What will be an ideal response?
Trades & Technology
You might also like to view...
List the visual differences between alpacas and llamas
What will be an ideal response?
Trades & Technology
In a master-slave system, the output of the slave network must precisely follow the output of the master network.
Answer the following statement true (T) or false (F)
Trades & Technology
Find the y-parameters for the circuit shown below. Also, find the transfer function H(s) = V2(s)/V1(s).
Trades & Technology
Most original equipment manufacturers use what type of lubricant in their R-134a systems?
A. Mineral B. Ester C. Paraffinc D. PAG
Trades & Technology