Draw the developed diagram, the sequence diagram and the winding table of a simplex retrogressive lap winding of a four poles generator with 12 slots, 12 coils and the (coil sides/slot) is 2. Find also the position of the brushes on the commutator.

Q: The dc current in dc machines is supplied to Select one: a. Field windings b. Compensating windings…

A: The dc current in dc machines is supplied to  A. Field windings  B. Compensating windings  C. Stator…

Q: 1. Variable loss in a dc series generator = la2 Ra. 2. Lap winding is suitable for high current,…

A: The explanation is as follows.

Q: A compound generator has a lap-wound armature with 200 slots and four turns per coil. It is rotating…

A: As per the guidelines given, We can only provide the solution of the first three questions in…

Q: ) the armature windings of a 12-pole DC machine are composed of 72 coils with 10 windings, and the…

A:

Q: (iv) Define two parameters which are indices of performance of a DC generator and there values…

A: The Two parameters which are indices of a performance of a DC generator and there values affect the…

Q: purpose of brushes in a dc machine is__________. to change ac to dc signal to remove the losses in…

A: brushes in DC machine is placed between rorating commutator and external circuit. We will consider…

Q: What are the various losses in an Induction motor? On what factors do they depend?

A: the fallowing are the various losses that occur in induction motor:

Q: A thicker wire is used in the DC series field winding than DC shunt field winding in DC machines. *…

A: current carrying capacity of wire is directly proportional to area of wire. i.e. thicker the wire ,…

Q: Discuss the effects of rotor resistance in T-S characteristics of 3 phase induction motor.

A:

Q: explain the working of induction generator with diagrams

A: If rotor of induction machine is driven at a speed greater than synchronous speed then rotor…

Q: Calculate the flux per pole required on full-load for a 50 kW, 400 V, 8-pole, 600 r.p.m. d.c. shunt…

A: The output power of the dc shunt is given. The load current is calculated as shown below:  P=50…

Q: A short shunt compound generator supplies 100A at 110V. Armature resistance is 0.05Q and the shunt…

A: The answer as given below:

Q: A short-shunt d.c. compound generator supplies 250A at 50V. The r shunt field windings are 0.02,…

A:

Q: 1.5  A 10‐pole, 380 ‐V, 50 Hz, D‐connected three‐phase induction motor is rotating a quarry belt…

A: Since we only answers up to 3 sub-parts, we will answer the first 3. Please resubmit the question…

Q: 2, the shunt field resistance is 200 2 and there is a brush contact voltage drop of 1 V at each…

A:

Q: Why the rotary transformers suffer from low efficiency?

A: Efficiency of transformer is given by ratio of output and input. Mathematically efficiency is given…

Q: Under load in DC machines, the armature current will cause: a. Compensating Windings O b. Increase…

A: The given problem is from DC Machine.  The detailed explanation is given in the next step

Q: In a separately excited generator supplying rated load the armature reaction. O is always present O…

A:

Q: 4.12 In a compound machine, the shunt field winding has 470 turns/pole, and the series field winding…

A: Given current in the series field winding is 15 A and No. of series field turns per pole is 13  and…

Q: b) In a dc shunt generator, as the load increases the terminal voltage falls. Illustrate the reason…

A:

Q: A short shunt compound DC generator supplies a load current of 10A at a voltage of 10 volts. If the…

A: Given: A short shunt compound DC generator in which IL=10AV=10VRa=0.001ΩRsh=1ΩRse=0.00Ω According to…

Q: a. Explain the terms, coil span, coil pitch, short pitching and chording of coils. b. Equalizer…

A: a) Coil span: A coil is made of a single turn or multi turns of a conductor. Each side of a…

Q: When a self-excited compound DC generator supplies load, the terminal voltage is not the same as the…

A: The explanation is as follows.

Q: Explain in detail the Starting of Induction Motors

A:

Q: Name the four types of compound connections for dc generators.

A: In compound DC generator, the two physical connections between the field winding and shunt winding…

Q: In a DC generator, the effect of armature reaction on the main field is to * reverse it O distort it…

A: - When current flows through the armature conductors, the flux is set up in the air gap. - The flux…

Q: Write a summary ( point) about equivalent cricuit of three phase induction motor .

A:

Q: In DC Shunt generator, the armature winding and field winding are connected in series Select one: O…

A: 1) In DC shunt generator the armature winding and field winding are connected in parallel while in…

Q: 7) The flux per pole of a four-pole generator is 0.05 wb. It driven at a speed of 1500 rpm. In order…

A:

Q: Q / What is the benefit, purpose and conclusions of making single-phase induction motors .?

A: consider  the given question;

Q: 4. The commercial efficoency of a shunt generator is maximum when Its variable os equals...loss, a.…

A: The answer for question 4 is option a) constant. The answer for question 5 is option d) either a or…

Q: A 150 kW, 250-volt compound DC generator has its field windings which are connected in long shunt.…

A: First using ohms law we will find current in shunt field winding.  Now using following relation we…

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.