A series motor takes 20Amp.at 400Volt to drive a fan at 200rpm.its resistance is 1Ω (field and armature) if the torque required to drive the fan varies as the square of the speed, find the necessary applied voltage and current to drive the fan at 300rpm?

Q: Running at 1200 rpm from a 280-V source, a series-connected dc motor draws an armature current of 25…

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Q: A permanent-magnet DC motor has the following specifications:        Motor Armature Supply Voltage…

A: In this question we have to find out motor armature current with given data.. In

Q: A 250V series motor draws a current of 40A. The armature resistance is 0.15 ohm and the field…

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Q: an overall efficiency of 83.5%.

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Q: 1. A 230 V shunt motor takes a total current of 25 A. If the field winding resistance is 100Ω and…

A: Armature current=Total current-shunt field current. shunt field current=Voltage across…

Q: An induction motor has a full load slip of 0.04. It's starting current 5 times its full load…

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Q: A 440 V d.c. Armature resistance of shunt motor is 0.25 Ω and field winding resistance is 220 Ω. A…

A: Solution: Given data; V =440 v, Armature resistance Ra=0.25 Ω, shunt resistance Rsh=220 Ω, Load…

Q: Why when I have a small, desired speed of a Dc MOTOR the measured speed has small error while if I…

A: A motor that operates by the Direct current and converts energy from direct current into mechanical…

Q: A dc motor has an electrical power of 150W, speed of w=30rad/s, and a torque of 3N-m. The efficiency…

A: given Input power= 150W w=30 rad/sec torque,τ=3 N-m

Q: 8. Find the counter-EMF voltage of a permanent magnet DC motor when it runs at 2080 rpm. The…

A: The solution is given below

Q: A 500 V shunt motor has an armature resistance of 0.3 Ω and field resistance 0f 250 Ω. Determine the…

A: Given

Q: A d.c. series motor takes 40 A at 220 V and runs at 800 r.p.m. If the armature and field resistance…

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Q: While discussing electric motors: Technician A says that when there is high CEMF, there will be high…

A: Given, While discussing electric motors: Technician A says that when there is high CEMF, there will…

Q: The rotor of an induction motor has a moment of inertia of 5kgm2. What is the torque required to…

A: Given data,  Inertia is given as, I=5 kgm2 Final speed Nf=1800 rpm Initial speed Ni=1600 rpm Time t…

Q: A DC series motor takes 40 A at 220 V and runs at 800 rpm. If the armature and field resistances are…

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Q: A 240 V series motor takes 40 amperes when giving its rated output at 1500r.p.m. Its resistance is…

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Q: the relation between armature and field currents in a series connected DC motor is O It = If + la O…

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Q: Explain the construction of AC serve motor, also draw its diagram.

A: Construction AC servo engines are fundamentally two-stage squirrel confine acceptance engines and…

Q: A 100 V, 470 A and 590 rpm, DC separately excited motor has Ra=Ra= 0.03 ΩΩ and Rf=Rf= 18 ΩΩ. It…

A: Given that DC separately excited motor The line voltage supplied to armature is VL=100V. The…

Q: A DC series motor is running with a speed of 800 RPM, while taking a current of 20A from the supply.…

A: Back emf =terminal voltage- voltage drop in armature resistance.  Also back emf is directly…

Q: Calculate the torque in newton-metre developed by a 440 V dc motor having an amature resistance of…

A: GivenTerminal voltage V=440 vArmature resistance ra=0.25 ΩSpeed N=750 rpmArmature current Ia=60 A

Q: A 240 V dc series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3…

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Q: In a d.c. series motor, the torque developed is 20 Nm at 10 A. If the load current is doubled, the…

A: Given a dc series motor with, Torque developed, τ1=20 Nm. At the current, I1=10 A. When the current…

Q: At no load, a 250V shunt motor runs at 1000 rpm and draws 8A. Armature and field resistances are…

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Q: series motor runs at 800rpm when the voltage is 400v and the current is 25 ampere the armature…

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Q: tor has lap-wound arn rotating at 100 slots 2 turms per col. 100rpm. Flux per pole is 100mWb.…

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Q: Q3: A universal fractional horsepower series motor has a resistance of 30 Q and a total inductance…

A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…

Q: Problem 3: Design a PWM to control a servo motor based on the data given in Table 2 Angle -60 0 +60…

A: PWM refers to pulse width modulation is a term used to describe an digital signal. An PWM signal can…

Q: A dc shunt motor runs at 900 rpm from a 460 V supply when taking an armature current of 25 A.…

A: A dc shunt motor runs at 900 rpm from a 460 V supply when taking an armature current of 25 A.…

Q: The e.m.f. induced in the armature of a shunt generator is 600V. The armature resistance is 0.1 ohm.…

A: Given, Induced EMF, Eg = 600 V Armature resistance, Ra = 0.1 ohm Armature current, Ia = 200 A…

Q: A 6-pole. 50-Hz 3-ϕ induction motor is running at 950 rpm and has rotor loss of 5 kW. Its rotor…

A: Thank you Reference,Concept and some relevant examples:

Q: A 220 V shunt motor has an armature resistance of 0.4 ohm and field resistance of 140 ohm. The motor…

A: We have an shunt motor which is having, Voltage (V) = 220 V Armature resistance (Ra) = 0.4 Ω Field…

Q: The overall efficiency of a 4-pole DC  motor is 83.5% when running at a speed of 550 rpm. The motor…

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Q: dc shunt motor

A: Given- DC shunt motor- Current, IL = 30 A Voltage, Vt = 230 V Efficiency= 80 %  Field resistance…

Q: 4. The field windings of a series motor has a resistance of 120 ohms at 15°C. After running for two…

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Q: In a given DC motor, the output power is 20 HP, and the rotational losses are 1.1 KW. If the motor…

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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 120-V series motor runs at 2000 rpm at full load and takes a current of 12 A. The…

A: Given:Voltage V=120 VFull load current I=12 AArmature resistance Ra=0.3 ΩSeries field resistance…

Q: A shunt generator delivers 1,000 W at 149 V to a load. If the armature resistance is 0 ohm, and the…

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Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.