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Q: In the three phase half wave controlled converter, after one cycle, when will the thyristor T3 be…

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Q: The three phase 50V full wave AC voltage controller (shown below) is used to control the AC output…

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Q: If in a single phase full wave AC voltage controller, the firing angle of the SCRS are equal, then…

A: If in a single phase full wave AC voltage controller, the firing angle of the SCRS are equal, then…

Q: In moving coil instruments, proportional to the coil current. is

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Q: Determine the frequency of oscillation if the duty cycle D=20% and 1 ms. - - T the ON period T

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Q: Identify which measurement this oscilloscope time difference reading is useful for. Ociloscope-XSC1…

A: Given, T1= 250us T2= 1.261ms T2-T1= 1.011ms Scale: On x-axis: 200us/Div On y-axis: 100V/Div

Q: 91 The disadvantage associated with an electrodynamic instrument is that it consumes more power it…

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Q: What are the features used mode 2 in 8255?

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A: We need to find DC voltage and current for half wave rectifier.

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A: The general simplified statement for rms output voltage in a ac voltage controller is the effect of…

Q: rms vs average vs peak voltage

A: To show the relation between rms vs average vs peak voltage

Q: A synchronous machine is generating power of 2.6 MW, If the machine can deliver a maximum power of…

A: Power delivered by synchronous machine =(maximum power it can deliver) ×sin(power angle). Given…

Q: For the sine waveform shown in figure, determine (a) periodic time, (b) frequency, (c) peak voltage,…

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Q: Voltage (V) 120 100 80 40 20 0 0 30 Time (us) The load must be predominantly resistive. The average…

A: Peak current is 2A.Peak Voltage is 100V.Both waveforms are triangular.

Q: A synchronous machine is generating power of 2.6 MW, If the machine can deliver a maximum power of…

A: Given: P=2.6 MWPem=3.7 MW

Q: For the CRO display of a pulse waveform, the time/cm is on 14.2 ms/cm and the volt/cm switch is on 5…

A: Given data, Time/ cm = 14.2 ms/cm Width (w) = 16.1 cm Time period (T) = (time/cm) x width ----(1)

Q: In CRO, oscillator circuit that produces sweep wave is called The armature core of a dc generator is…

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Q: the secondary voltage of the transformer of the circuit in the figure is Vs= 45 Sin wt volt, for a…

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Q: C2 (ii). A pulse waveform is displayed on a C.R.O. screen, the time/cm switch is on 50 us/cm and the…

A: time scale = 50us/cm ampltitude scale= 10V/cm

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Q: AVcc RA = 1kr NES55 Vout Oulput 3 2. 9. .C2 =0.0 luf figue 1. Refer to the fiqure 1: @ Calculate the…

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Q: 1. A sine waveform is shown in Figure A1, Volatge, mV

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Q: Please explain the difference between Analog Phase Measurements and Digital Phase Detectors in…

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Q: SooA/uA C T 138KV/58r PT L- G Balanch Lagging(Vent by Iser=8A Yo

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Q: 6. The instantaneous value of an alternating current is 5 mA at a displacement angle of 60°.…

A: Step 1: Step 2: Step 3: Step 4:

Q: Voltage Peak value RMS value Average value Peak-to- peak value O V Time VT = Vmsinwt

A: Given, The wave form is sinusoidal. Please find the below attachment for the clear explanation.

Q: A DC chopper with a switching frequency of 10KHz & off time of 35 microseconds, the duty cycle is…

A: Given, Switching Frequency f=10 kHz, and off time Toff=35*10-6 s, find the duty cycle.

Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.