6. A shunt generator when running light as a motor at 1000 rpm takes 12 Amp from 115-Volt mains. The field current is 7 Amp, and the armature resistance is 0.03 ohm. Determine stray- power loss of the machine at this particular value of flux and speed.

Q: Describe the similarities in the construction of a DC motor and a DC generator.

A: From a mechanical standpoint, a DC motor and a DC generator are quite similar, but from a technical…

Q: 29. In a motor, the armature resistance is 0.1 ohm. When connected across 110 volts mains, the…

A: Given data, Armature resistance, Ra = 0.1 Ω. Main supply voltage, V = 110 V. Armature current, Ia1…

Q: 27. A 440 Volt short shunt compound generator has a full-load current of 200 Amp. Its armature…

A:

Q: The armature reaction of DC machines is less under no load condition. Select one: O True O False

A: Armature reaction is the effect of armature fluxon the main field flux. Armature flux is due to…

Q: A 230V dc series motor has an armature resistance of 0.5 and 0.3 oh respectively. The motor draws a…

A: Case 1: Without diverter: The motor can be represented as below Here           Vin=Motor voltage…

Q: 1-Which of the following statements INCORRECTLY explain the label in the figure about LVDT working…

A: 1) Lvdt is an pssive transducers which is usdd for linear displacement measurement. It consists of…

Q: h a labelled diagram of any DC machine  Discuss it part

A: A self-excited DC shunt motor, also known as a shunt wound DC motor, is a form of self-excited DC…

Q: 4. Why the O.C.C. characteristic is non-linear?

A: The O.C.C. characteristics are drawn between output voltage E and field current I.

Q: lorque-current curve 0.8 450 0.7 400 350 0.6 300 0.5 250 0.4 200 0.3 150 0.2 100 • Speed 0.1 50 •…

A: There are two ways for doing that, 1:- we will collect data from the given data (taking approximate…

Q: The resistance of the armature of a 250V shunt motor is 0.3ohm and its full load speed is 1000rpm.…

A: GIven Data, VT = 250 V Ra = 0.3 Ohm N1 = 1000 rpm N2 = 800 rpm Ia1 = 5 A

Q: The single - phase ac voltage controller with inductive load. Plot the waveform of output voltage…

A: According to the question we have to plot waveform according to given conditions.

Q: The brushes of DC machines are usually made of and are in the shape of rectangular block. Select…

A: Brushes of dc machine are made of corbon graphite .and these are in rectangular shape.

Q: What are the different losses which occur in a DC machine. * Your answer

A: In this answer let's discuss about the different losses that can occur in a dc machine.

Q: Provide brief answer only. What is a variable DC source? Give symbol and applications.

A: Variable dc source is an Electrical/Electronics device which is used to supply the variable DC…

Q: Problem 3 A 250 V d.c. shunt motor runs at 1000 rpm. and takes an armature current of 25 amp. Its…

A: Write the given values. V=250 VN1=1000 rpmIa1=25 ARa=0.4 ΩIa2=50 A

Q: Q9 / What are the function of brushes , pole and commutator in DC machine

A:

Q: What do you think is better? AC or DC? Explain why.

A: Consider that the ac power is used for transmission over long distances as the power conversion…

Q: Which do you prefer the most, DC or AC? Why?

A: AC  Supply is most preferable supply compared to the DC supply. Generation of the electricity away…

Q: Q3) In a two-excitation and two-pole machine, the rotor and stator of both poles are prominent…

A: It is given that the rotor winding is short-circuited. The voltage across the rotor will be zero.…

Q: A 220 V dc machine has an armature resistance of 1ohm if the full load current is 20 A, the…

A: Armature induced EMF=Terminal voltage ± drop in armature resistance drop in armature…

Q: 7. A dc series motor on full load takes 50A from 230V dc mains. The total resistance of the motor is…

A: Calculate the back emf of the motor. Ea=V-IaRa-Vb=230 V-50 A0.22 Ω-2 V=230 V-11 V-2 V=217 V

Q: Get the electromechanical analog model (torque-voltage or torque-current) of the system. With all…

A: Step 1:Γ=kΘ+BΘ'+JΘ''is equation of Rotational mechanical system. Where Tau = Torque,J =Moment of…

Q: 8. When a series motor is connected across 110Vmains, it armature draws a current of 20A at a speed…

A:

Q: Draw the DC Machine and label its parts

A:

Q: Explain the stability analysis of a DC system in detail

A: It is given that: DC system

Q: A shunt generator supply 100A at 200 V. The armature and shunt resistance are 0.025 and 100 ohms…

A: In this question, A shunt generator supply Load current IL = 100A , V=200 V. The armature and shunt…

Q: Explain ne breakdown liquid Discuss the different methods of measuring high dc voltages. What are…

A:

Q: State TWO (2) advantages of AC systems compared to DC System

A:

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.