A 25kW Shunt Generator has armature resistanc of 0.50 and field resistance 1500 generates erminal voltage of 250 V at full load. The iron, riction and windage losses are 800W. i) Estimate he total losses in a generator. i) Calculate the fficiency of the generator.

Q: 13. A 200V DC Generator has a shunt field resistance of 200ohms. Its field current A) 1A B) 2A C) 3A…

A:

Q: 13. A 200V DC Generator has a shunt field resistance of 200ohms. Its field current A) 1A B) 2A C) 3A…

A: 13. Given data, Terminal voltage V = 200 V Field resistance Rf=200 Ω

Q: Q2: A 6-pole, wave wound generator has 48 slots with 20 conductors in each. the flux per pole is…

A:

Q: uèstion 7 A shunt generator running at 1000 r.p.m. has generated e.m.f. as 300 V. If the speed…

A: In this question, choose the correct option What is emf at speed = 1200rpm

Q: Mention 3 factors causing a permanent magnet generator not to generate emf

A: The objective of the question is to identify the three main factors that can cause a permanent…

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: The DC shunt generator with the terminal voltage 350 V, armature drop 9 V and the each brush drop 4…

A: We need to tell about generated voltage for generator.

Q: A dc short shunt compound generator delivers 20 kW to a load at 500 V. The armature, series field…

A: In this question we need to find a power developed in armature .

Q: H.W z²+z X(z)= 3 (2-1) ³² (2-²)

A: Given, X(z)=z2+z(z-1z)3(z-14) find the Inverse Z-Transform

Q: A 6 pole DC wave wound generator has 21 armature conductors with flux per pole is 29 mWb and the…

A: emf indued E = Flux×speed×no.of conductors60×no. of polesno. of parallel paths Given Flux=29 m Wb…

Q: If we need to use a DC generator witha very good voltage regulation we choose: * DC Generators…

A:

Q: When the field resistance in the synchronous generator decreased, its flux and terminal voltage:…

A: Choose the correct option.  This question is based on the synchronous Generator.  When the field…

Q: Four compound generators operating in parallel supply a load of 1,000 A. The resistance of series…

A:

Q: The type generator field winding is supplied from the external D.C. source. O Shunt O Self excited o…

A: Seld excited generator does not require addtional power DC supply.

Q: shunt generator has an armature resistance of 12 and field resistance of 80N. Field c xty turns and…

A:

Q: The dc shunt generator given its rated voltage when the field resistance is higher than critical. O…

A: We know that the critical field resistance is the highest allowable shunt field winding resistance…

Q: The output of a shunt generator is 66A at 100V. Armature resistance is 0.04Ω and the field…

A:

Q: A 6-pole lap wound generator has 900 conductors. The e.mf induced per one tur being 3 V. the…

A: Given lap connected , So, No. of poles = No. of parallel paths = 6 Given voltage per turn = 3 volts…

Q: If two 3-phase induction machines are mechanically coupled with each other. The two machines are…

A: The induction motors are coupled here mechanically. The speed will same for both machines because of…

Q: A three-phase synchronous generator is rotating at 1500 RPM synchronous speed. The output power of…

A: In this question we will find induced torque in generator...

Q: PZ 4- A 4-pole generator has a wave-wound armature with 722 conductors and the armature current is…

A:

Q: 8-pole 3-phase star-connected alternator with 144 grooves in its armature rotates at 900 rpm. There…

A: Given values are - P=8Phase=3GroovesSlotsS=144NS=900rpmConductors per groovesSlots=12Flux per…

Q: The 50kW, 500V short compound DC generator has an armature resistance of 0.06 Ohms, a series field…

A:

Q: A long shunt compound generator supplies 29 A at 420 V. If the field resistance is 246 Q, the series…

A:

Q: 1. If the number of poles in a lap wound generator is doubled, then the generated emf will be a)…

A: Given: Number of poles in lap wound generator are doubled.

Q: Figure 1 shows an electric generator with 3 rotor windings as marked by a-1, b-2 and c-3. A…

A: The objective of the question is to design a 3-phase 3-wire connection for an electric generator…

Q: winding

A:

Q: d. Winding table ( e. Winding diagram (

A: Turn per coil = 1Conductor per slot = 2Commutator segments = 25To create a winding table for a…

Q: 4. When driven at 1000 r.p.m. with a flux per pole of 0.02 Wb, a d.c. generator has an e.m.f. of 200…

A: We need to find out induced emf for given generator

Q: The field system is the rotating part of the DC Generator Select one: True False

A: In DC machine rectification of power (i.e. from AC to DC or viceversa ) is done by the commutator.…

Q: A four - pole DC long shunt compound generator with a wave wound armature, having 390 conductors,…

A: Since you have posted a question with multiple sub-parts, we will solve the first three parts for…

Q: The open-circuit characteristic of a DC generator is also called as characteristics. O internal O…

A: The open characteristic equation of a dc generator is between no load emf and field current is…

Q: Some test have been made on a 250 kVA, 800 V, 50 Hz three-phase star connected synchronous generator…

A: An alternator/Synchronous generator is a type of electrical machine that converts mechanical energy…

Q: 6. A compound dynamo supplies a load of 20 kW at 400 V through a feeder having a resistance of 0.1…

A: Given: Power, P=20kW Voltage, V=400V Feeder resistance, Rf=0.1Ω Shunt resistance, Rsh=85Ω Series…

Q: Write down the Voltage equation of a Separately excited DC Generator

A: In this question we need to Write down the Voltage equation of a Separately excited DC Generator

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.