Which of the following is/are a part a generator's electric circuit? a) the commutator b) the brushes c) the armature windings d) all of the above

Q2\A/ A 8-pole de generator has 500 armature conductors and a useful flux of 0.05 wb. What will be the e.m.f. generated, if it is lap-connected and runs at 1,200 r.p.m.? What must be the which it is to be driven to produce the same e.m.f., if it is wave-wound?

20 only please

Electric Machines2   What are the characteristics of the rotating magnetic field created by three-phase current inthree-phase stator winding?

Explain in details how the separately-excited de generator works?

A short shunt compound dc generator delivers a load current of 30 A and 200 V and has armature, series field and shunt field resistance of 0.05-ohm, 0.03 ohm and 200 ohms respectively. Calculate the generated voltage (allow 1 V for brush contact drop)

Kindly solve what is ask with complete solution so that I can understand. I want a handwritten solution. Thank you very much pots!

3. A 7970 V:120 V, 60 Hz potential transformer has the following parameters as seen from the high-voltage (primary) windings: X = 1721 Ω _ Χ = 1897 Ω_Xm = 782 kΩ = R₁ = 1378 2 R₂ = 1602 $2 a) Assuming that the secondary is open circuited and that the primary is connected to a 7.97 kV source, calculate the magnitude and the phase angle (with respect to the high-voltage source) of the voltage at the secondary terminals. b) Calculate the magnitude and the phase angle of the secondary voltage if a 1-kn resistive load is connected to the secondary terminals.

Which is the device in DC generators that converts AC into DC? stator brushes commutator armature This type of armature winding delivers high e.m.f. and low current. dummy or idle coils lap winding O frog-leg winding wave winding

Q choose the correct answer: 1-Brushless excitation system consisting of.... a- Stator field winding and power diodes b-stator and rotor field winding and capacitor c- stator and rotor field winding and capacitor d- Everything mentioned in the options 2- Voltage generated per phase in an alternator is proportional to a- Flux per pole b- Number of turns in armature c-Winding factors d- Everything mentioned in the options e- Frequency of waveform 3- If input mech. Power of SG constant, the functionality of AVR is a- Control flux of rotor b-Control terminal voltage c- Control flux and terminal voltage d-Control Load angle