The shunt DC generator gives almost O Constant current O None of these O Constant voltage O Constant current and voltage
Q: A 4-pole dc generator is running at 1500 rpm. The frequency of current in the armature winding is…
A: we need to determine frequency.
Q: 1. Laminations of core are generally made of. e.+ Si 37. 2. In case of the induction motors the…
A:
Q: D.C. generator will be in a position to build up without any residual magnetism compound series…
A: To start DC generarator residual magnetism is required, if it is not present then by method of…
Q: At rest condition, the slip of induction motor is 1. Select one: O True O False
A:
Q: of.fe.ST 1. Laminations of core are generally made of.. 2. In case of the induction motors the…
A: As per the guidelines, we supposed to answer three questions at a time, please ask other question…
Q: In DC generators, lap winding is suitable for ) high voltage, high current low voltage, high current…
A:
Q: 5 A 4-pole, d.c. shunt motor has a flux per pole of 0.04 Wb and the armature is lap-wound with 720…
A: To calculate the speed, N of DC machine in both cases Case I: When it runs as a motor and takes 60 A…
Q: Which of the following is essential condition of paralleling two DC generators? Equal currents Equal…
A: According to the question we have to discuss, the condition for the parallel operation of the two DC…
Q: The current flows in the windings of the DC machine which causes the O Ohmic loss O Eddy current…
A: Given : Generally DC machines are those circuits which will converts the electrical energy into…
Q: shunt generator running at 1000 rpm, if flux is reduced by half, then what is the new speed 1500…
A: The solution can be achieved as follows.
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: In the DC shunt generator, the induced voltage in idle operation is 127V. Output voltage when loaded…
A:
Q: 16 A 2-pole d.c. shunt generator has a useful flux per pole of 0.03 Wb. The armature winding consist…
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Q: na dc machine when the number of parallels paths is (a) and the number of poles is (p), chus for lap…
A: Given In lap winding DC machine Number of parallel paths = a Number of poles = p
Q: A 2-pole d.c. shunt generator has a useful flux per pole of 0.03 Wb. The armature winding consist of…
A:
Q: 2300 V 428 hp 60 Hz 8-pole synchronous motor has an efficiency of 85 percent Under this condition,…
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Q: The shunt field winding of the DC motor has less turns of thick wire. Select one: O True O False
A: The shunt field winding of the DC motor has less turns of thick wire.
Q: A 20 kW, 200 V shunt generator has an armature resistance of 0.05 and a shunt field resistance of…
A:
Q: QUA) Fill in the blanks: 1. Laminations of core are generally made of..... d. In case of the…
A: As per the policy I have attended first three sub parts of the first question 1) Lamination is…
Q: The terminal voltage of an alternator changes with the increase in load due to voltage drop on…
A: Given that terminal voltage in a alternator change with respect to.load with respect to voltage…
Q: A 2-pole d.c. shunt generator has a useful flux per pole of 0.03 Wb. The armature winding consist of…
A: From the DC shunt generator equation
Q: The field circuit of a 125-volt dc generator has a resistance of 50 ohms and an inductance of 12.3…
A: The solution is given below
Q: In a DC machine, the reversal of current from one direction to opposite direction is done by O…
A: In DC machine there is a mechanical converter which is used to change the direction of current.
Q: Shunt generator running at 2000 rpm, if flux is reduced by half, then what is the new speed * 1000…
A: Let us find the new speed using the emf equation used in the case of dc generator.
Q: n flux control method the speed of DC motor is obtained O Both above and below base speed O Above…
A:
Q: One of essential condition for paralleling two DC generators is Equal current Correct
A: Paralleling of DC generators is performed to have greater reliability.
Q: To minimize the time where the voltage produced by a coil in the armature of a dc generator is zero,…
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Q: The speed of dc series motor at no load is 1. Zero 2. Infinity 3. Approximately 3000 rpm 4.…
A: For a dc series motor Back emf, E=V-IaRa+Rse And E=kaϕseωm ϕse∝Ia So,…
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: A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2V. The…
A: Given: Lap wound DC machine has 400 conductors and 8 poles. So, Z=400P=8A=P=8 Voltage induced per…
Q: A certain 110 V shunt generator has an armature and brush resistance of 0.06 ohm at full load of 85…
A: we need to determine the efficiency.
Q: Q5// A 4 pole lap - winding dc shunt generator has an armature winding consisting of 220 turns each…
A: Note: As per the company's guidelines, only one question is allowed to answer. Kindly post the other…
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 240 V DC shunt motor takes 20 A and delivers 28 N.m at 1350 r.p.m, the efficiency is . O 73.63% O…
A: Given: A DC shunt motor having following specifications Rated voltage, V=240 V Current, I=20 A…
Q: A 900 rpm, 4 pole lap wound shunt motor takes 300 A. The flux per pole is 0.02 Wb and the armature…
A: A 900 rpm, 4 pole lap wound shunt motor takes 300 A. The flux per pole is 0.02 Wb and the armature…
Q: List the four basic faults which can prevent a self excited generator to buildup voltage.
A: We can define fault as imperfection in electrical system due to which current may get deviated from…
Q: in series connected DC motor, the equation of electromagnetic torque is O Te = Laf * If * la O Te =…
A: Types of DC Motor DC series motor DC Shunt Motor Sepereted excited Motor Compound Motor…
Q: The bearings and commutator rotation of the DC machines which causes the O Hysteresis loss O Ohmic…
A:
Q: Shunt generator running at 2000 rpm, if flux is reduced by half, then * what is the new speed 1000…
A: Given:- Shunt Generator with speed 2000rpm and it's flux being reduced to half.
Q: 4. If the no load speed of DC motor is 1300 rpm and full load speed is 1100 rpm, then its voltage…
A: Given, A DC motor with No load speed = 1300 rpm Full load speed = 1100 rpm
Q: In a DC machine, the reversal of current from one direction to opposite direction is done by O…
A: Choose the correct option In DC machine, the reversal of current from one direction to opposite…
Q: The current drawn by a 120 V dc motor with back emf of 110 V and armature * :resistance of 0.4 ohms…
A:
Q: Only moving part in a stepper motor is a. Rotor b. Stator c. Brushes d. Commutator
A: Stepper Motor:- A stepper motor is an electric motor in which the shaft of the motor rotates by…
Q: A 2-pole d.c. shunt generator has a useful flux per pole of 0.03 Wb. The armature winding consist of…
A: The solution can be achieved as follows.
Q: A 4 pole lap Wound DC shunt generator has 300 armature conductors an flux per pole of 0.01 Wb. It…
A: In this question we have given dc shunt generator .We have to find out terminal voltage of dc…
Q: Shunt generator running at 2000 rpm, if flux is reduced by half, then what is the new speed O 1000…
A: The solution can be achieved as follows.
Q: 1. Two DC generators are connected in parallel to supply a load of 1500 Amp. One generator has an…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: 8. The critical resistance of the d.c. generator is the resistance of (a) armature (b) field (c)…
A: The maximum resistance of Field circuit above which no voltage build up is possible is called the…
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- Differentiate between the AC and DC magnetic fields applied to an induction motor stator.A shunt DC generator has no load terminal voltage of 140V. Armature resistance is 1ohm and shunt field resistance is 50ohms. Calculate: (i) Induced voltage (ii) A load is now connected to the terminals that starts drawing 2A current and terminal voltage drops to 130V. Calculate the new value of the induced voltage Make sure to draw equivalent circuits for (i) and (ii)• T or F, modify the wrong part if False, please underline twice your answer if True or False. The current that flows in the armature of a DC generator is DC in nature.
- A short shunt compound dc generator delivers 100 A to a load at 250 V. The generator has shunt field, series field and armature resistance of 130 ohm, 0.1 ohm and 0.1 ohm respectively. Calculate the voltage generated in armature winding. Assume 1 V drop per brush.The armature and shunt field resistance of a 50-kW, 220 V shunt generator is 0.026 ohm and 52 ohms respectively. What is the generated EMF?A 4 pole lap wound DC shunt generator has 300 armature conductors and a flux per pole of 0.01 Wb. It runs at 1000 rpm. The armature and shunt field resistances are 0.2 ohm and 125 ohms respectively. Calculate the terminal voltage when it is loaded to take a load current of 90 A.
- The DC shunt generator with the terminal voltage 300 V, armature drop 9 V and the total brush drop 4 V, then the value of generated emf is46. A separately excited six-pole generator has a 30 mWb flux per pole. The armature is lap wound and has 534 conductors. This supplies a certain load at 250 V while running at 1000 rpm. At this load, the armature copper loss is 640 W. Calculate the load supplied by the generator. Take 2 V as the total brush contact drop.One type of failure that's more common with 200 HP motors than with 10 HP motors is A. rotor bar failure.B. contactor failure.C. bearing failure. D. stator failures.
- DC shunt generator has a terminal voltage of 191 V and armature current of 0A (under no load), then the EMF generated is calculated as5. Calculate the flux per pole required on full-load for a 50 kW, 400 V, 8-pole, 600 r.p.m. d.c. shunt generator with 256 conductors arranged in a lap-connected winding. The armature winding resistances is 0.1 Ω, the shunt field resistance is 200 Ω and there is a brush contact voltage drop of 1 V at each brush on full-load. Subject Electrical Machine 1A 4 pole lap connected shunt generator has 300 armature conductors and a flux per pole of 0.1webe. It runs at 1000rpm. The armature and field resistances are 0.2 ohms and 125 ohms respectively. Calculate the terminal voltage when it is loaded to take a load current of 90A.