Electrical plants Draw the connection diagram of the Impulse relay and write the working principle and usage areas.
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- What are the advantages and disadvantages of using Flyback and Push-Pull Converters in electrical power applications?The preferred method for applying the field excitation voltage uses a field relay which operates on the principle of A. speed application. B. time application.C. angle application. D. thermal application.A 3-phase 6-pulse converter is operated from a three-phase delta- connected 230 V, 50 Hz supply to supply a separately excited DC motor. The motor is rated at 220 V, 600 rpm, 500 A and it has an armature resistance of 0.02 Q. (i) Draw the circuit diagram of the system, and state what electronic component is used for the converter. Explain how this component works. (ii) Calculate the delay angle a. (iii) Calculate the delivered torque at rated conditions. (iv) If the mechanical loss torque is 150 Nm, and the power lost in the field winding is 3500 W. Calculate the full load efficiency of the motor.
- A 48kW, 600V, 1500 rpm separately excited dc motor is controlled by single phase semi-controlled converter. The resistance of the armature is 192 and of the field is 1450. The field circuit is controlled by a single phase fully controlled converter and its firing angle is set to 20. The AC supply voltage to the armature and field converters is a single phase 220V, 60 Hz. The voltage constant is 0.946 V/A rad/s. If the armature converter firing angle is 45 and the speed is 1200 rpm; calculate the armature current and the developed torque.The voltage drop at brush- commutator contact is variable (1-2V) .and dependent of armature current True O False O5. A single phase full wave ac voltage controller working on ON-OFF control technique has supply voltage of 230V r.m.s, at 50Hz, and a load R = 5002. The controller is ON for 30 cycles and off for 40 cycles. Calculate (a) ON & OFF time intervals. (b) the output R.M.S. voltage. (c) the power factor of the controller.
- Problem 2: Consider controlling the Omron G5LE-1 5VDC power relay, shown below, using an Arduino in the following circuit. A relay has windings that when energized cause a magnetic field, which mechanically closes the contact side of the relay, so it acts as an electronically controlled switch. One benefit of a relay is that the switch on the contact side is electrically isolated from the coil on the control side of the relay. This advantage of electrical isolation comes at a cost. Relays do not switch states quickly like transistors. Based on its data sheet, the Omron G5LE-1 5VDC has a coil resistance of 63N (at DC, consider the coil side of the relay as a resistor). Select the base resistance to ensure the P2N222A BJT is deep into saturation when the relay is energized (meaning current is flowing through its windings). o Note: It is safe to operate the Omron G5LE-1 at up to 130% of its rated voltage of 5VDC in its entire operating temperature range. Assume VcE sat = 0.2V for the BJT.…Can you explain the operation of AC input and output conditioning circuits?A 120V dc motor draws 200A is located 1000’ from the supply line. The diameter of the wire is 0.45” ; the specific resistance is 10.4 ohm – CM / ft. What is the supply voltage? *
- How does the AC coil of the PFR receive the induced field current without receiving the full field current strength?What are the key design considerations that need to be taken into account while designing a Flyback Converter or a Push-Pull Converter for a specific electrical power application?Question 2. Considering this figure. The firing angle is 45°, the motor current is 10 A, and the supply voltage is 110 v. 0₁ 0₂ 90 (a) Draw the waveforms of v, Vo. io. isi, iDi, and i. (b) Determine the power taken by the dc motor. (c) Determine the supply volt-amperes and supply power factor. Assume that the converter is lossless. (d) Determine the rms value of the SCR current and the diode current.
