0. 2.4KVA 120430°(+ V rms 0.6 pf lagging ect one: a. 94 A rms. b. 2.7 Ams. C. 47 A rms .
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- A certain impedance is given by 1012° N. Does the current lead or lag the voltage, and by how many degrees? Fill in the blanks. The current the voltage byFor the below sinusoidal voltage trace displayed by the CRO, the time/cm switch is on 5ms/cm and the volt/cm switch is on 3 V/cm. a) the frequency will bel Hz b) the amplitude will be V.The sinusoidal voltage trace displayed by the CRO, the time/cm switch is on 50 µs/cm and the volt/cm switch is on 20 V/cm. The width of one complete cycle is 3.6 cm and the peak to peak height is 5.8 cm. Determine the following: The frequency is = The peak to peak voltage is = The amplitude is = The R.M.S voltage is =
- 2. For a sinusoidal voltage trace displayed by the CRO, the time/cm switch is on at 500µs/cm and volt/cm switch is on 5V/cm. The width of one complete cycle is 4cm and peak to peak height is 5cm. Find (a) the frequency, (b) peak to peak voltage, (c)the amplitude and (d) the rms valueA step-down chopper is to be used to supply power from a 600-V overhead wire to the commutator motor on a trolley bus. The motor may be mod- eled as a generated direct voltage in series with a resistance of 0.2 and an inductance of 25 mH. The frequency of the chopper is set at 500 Hz. (a) When the bus is stopped, what should be the ON time of the chopper to provide a motor current of 150 A? (b) What is the maximum possible generated voltage of the motor for which a current of 150 A can be supplied? (c) What is the average value of the supply current for the conditions of (a) and (b)? បទៅនឹងរស់របស (d) If the motor current is to be continuous, what should be its minimum. value?In an experiment, the function generator is adjusted to generate a square voltage at a certain frequency. This voltage is displayed on an oscilloscope and the reading is 16 V peak-to-peak. The rms value of this voltage is .What will be the rms value of this voltage if the frequency is doubled? Select one: O 16 Vrms 32 Vrms O 8 Vrms . 8 Vrms ..... O 5.657 Vrms 5.657 Vrms ....... O 8 Vrms . 16 Vrms O 16 Vrms 8 Vrms ......
- For the current waveform that shown in Figure below Find:- 1). Average value 2). R.M.S value 3). Form factor Current (A) ha 8 10 12 1-2In an experiment, the function generator is adjusted to generate a square voltage at a certain frequency. This voltage is displayed on an oscilloscope and the reading is 10 V peak-to-peak. The rms value of this voltage is .What will be the rms value of this voltage if the frequency is reduced to the half value? 3.536 Vrms . 3.536 Vrms O 5 Vrms . 1.7677 Vrms O 3.536 Vrms. 1.7677 Vrms O 5 Vrms . 5 Vrms ...... O 10 Vrms . 10 Vrms ......For the below sinusoidal voltage trace displayed by the CRO, the time/cm switch is on 0.2ms/cm and the volt/cm switch is on 1 V/cm. a) the frequency will be Hz b) the r.m.s value will be In CRO the beam can also be shifted vertically by applving a suitable DC voltage to the
- A DC-DC Chopper Circuit with an RL Load has an output current waveform shown below with a duty cycle of 50% and 1ms period. If it has a resistance of lohm and an inductance of 10mH, find the source voltage. output 5A -current 2A ten toffDetermine and sketch the output voltage waveform for the circuit shown if the sinusoidal signal at the input has a peak-to-peak voltage of 30 volts with V=5volts. Identify the circuit.C5 What is the correct explanation for the voltage seen at Va in Figure C5? Va 1 Sost We will assume that the Vout Out Vb, capacitor is charged to a value determined by the feedback and the supply voltage +BVsat. Figure C5 A. The waveform on the capacitor looks like a discharge, and then a charging waveform to an equal but opposite magnitude voltage, B. The capacitor simply reverses its charge, with a charging waveform, C. The capacitor simply reverses its charge, with a discharging waveform, D. None of the above.