Uge b of Problem 5 (Seven points if only the correct answer is circled. Four points if two answer...
uge6 of7 Problem 5 (Seven points if only the correct answer is circled. Four points if two answers are circled and one is correct.) armature current of a de machine is controlled with a PI controller. The controller is The designed to cancel the electrical time constant. The following is known about the machine: KrWM = 15 (PWM converter gain) 0b- 2400 rad/s (system bandwidth) a) What is the armature inductance? R.-2.0 Ω (Armature resistance) e 16 ms (electrical time...
Problem 4 (Seven points if only the correct answer is circled. Four points if two answers are circled and one is correct.) A de machine has the following known: Kr-KE 0.4 Vs (torque and voltage constants) R, 2 Ω (armature resistance) a) At blocked rotor (Om-0), what would be the voltage needed for a torque of 1.2 Nm? 0.4 0.4 i) 1.2.,04 0.4 b) What would be the voltage needed to run no load (T 0) at 120 rad/s 120...
Problem 7 Five points if only the correct answer is circled Three points if the correct answer and one other answer are circled A flyback converter operating in continuous mode has the following parameters Vo 140 V (Input voltage) f-50 k㎐ (Switching frequency) N.1 (Transformer turns ratio) L-0.2S A (Average output current) L 128 mH (Inductance on winding 2) de 0.6 (duty cycle) N. 4 a) The input voltage is i)-쓺 İi) 4.06040 4 0.6.140 1 1-0.6 İİİ) 416040 1...
Problem 5 (5 points for circling just the correct answer. 3 points if 2 are circled and one is correct) A 4 pole permanent magnet synchronous machine is held at a constant angle. The torque on the shaft is T- 4.5 Nm. The current vector is given as a) What is the torque constant (KT)? ili) 4.5 6 ii) 4.5.6. 4.5 2 What is the mechanical angle of the shaft for θ.-60° ? i) 60+90 b) iii) 60을 ii) (60-90)...
Chose the correct answer(s) from the multiple choice lists below 1. Exergy of a system is a) b) always increasing e) guided by the first and second laws of thermodynamics for reversible processes only Un d) limited by the second law of thermodynamics for all processes. processes, it is destroyed partly or completely). e) equal to the Gibs free energy of the system. 211two electrodes, one made of u (E.-3.06 V) and another made of Cu ΟΕ.+034V placed in an...
summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...