A shunt generator delivers 50 KW at 250 V and runs at 400 rpm. Armature resistance and field resistance are 0.02 ohm and 50 ohm respectively. Calculate the speed of the machine running as a shunt motor and taking 50 KW input at 250 V. Allow 1 V per brush for contact drop.

A shunt generator delivers 50 KW at 250 V and runs at 400 rpm. Armature resistance and field resistance are 0.02 Ω and 50 Ω respectively. Calculate the speed of the machine running as a shunt motor and taking 50 KW input at 250 V. Allow 1 V per brush for contact drop. Problem Question A shunt generator delivers 50 KW at 250 V and runs at 400 rpm. Armature resistance and field resistance are 0.02 Ω and 50 Ω…

The EMF generated in the armature of a shunt generator is 625 V, when delivering its full current of 400 A to an external circuit if the field current is 6 A and armature resistance of0.06ohm, what is the terminal voltage?

The EMF generated in the armature of a shunt generator is 625 V, when delivering its full current of 400 A to an external circuit if the field current is 6 A and armature resistance of0.06Ω, what is the terminal voltage? Problem Question The EMF generated in the armature of a shunt generator is 625 V, when delivering its full current of 400 A to an external circuit if the field current is 6 A and armature resistance of0.06Ω, what…

A shunt wound DC generator delivers 496 A at 440 V to the load with shunt resistance of 110 ohm and armature resistance of 0.02ohm. Calculate the EMF induced in the armature.

A shunt wound DC generator delivers 496 A at 440 V to the load with shunt resistance of 110 Ω and armature resistance of 0.02Ω. Calculate the EMF induced in the armature. Problem Question A shunt wound DC generator delivers 496 A at 440 V to the load with shunt resistance of 110 Ω and armature resistance of 0.02Ω. Calculate the EMF induced in the armature. Topic DC Generators DC Generators Problems A shunt generator has 4 poles lap wound…

A 4-pole armature of DC Generator has 624 lap connected conductors and is driven at 1200 rpm. Calculate the useful flux per pole required to generate an EMF of 250 V.

A 4-pole armature of DC Generator has 624 lap connected conductors and is driven at 1200 rpm. Calculate the useful flux per pole required to generate an EMF of 250 V. Problem Question A 4-pole armature of DC Generator has 624 lap connected conductors and is driven at 1200 rpm. Calculate the useful flux per pole required to generate an EMF of 250 V. Topic DC Generators DC Generators Problems A shunt generator has 4 poles lap wound armature having…

A 4 pole DC shunt generator with lap connected armature has field and armature resistance of 50Ω and 0.1Ω respectively, If the generator supplies sixty 100V, 40W lamps, calculate the total armature current the current in each armature conductor and the generated EMF. Take 1V per brush as contact drop.

A 4 pole DC shunt generator with lap connected armature has field and armature resistance of 50Ω and 0.1Ω respectively, If the generator supplies sixty 100V, 40W lamps, calculate the total armature current the current in each armature conductor and the generated EMF. Take 1V per brush as contact drop. Problem Question A 4 pole DC shunt generator with lap connected armature has field and armature resistance of 50Ω and 0.1Ω respectively, If the generator supplies sixty 100V, 40W lamps,…

A shunt generator has 4 poles lap wound armature having 24 slots with 10 conductors per slot. If the flux per pole is 0.04 wb and the speed is 1500 rpm, Calculate the EMF generated in the armature. What would be the generated EMF if the winding is wave connected?

A shunt generator has 4 poles lap wound armature having 24 slots with 10 conductors per slot. If the flux per pole is 0.04 wb and the speed is 1500 rpm, Calculate the EMF generated in the armature. What would be the generated EMF if the winding is wave connected? Problem Question A shunt generator has 4 poles lap wound armature having 24 slots with 10 conductors per slot. If the flux per pole is 0.04 wb and the speed…

Calculate the approximate resistance and inductance of an air cored solenoid of mean diameter of 1 cm, 1m long wound with 1000 turns of copper wire, 0.5 mm in diameter. What potential difference exists between the terminals of the solenoid at the instant when the current is 1 A and increasing at the rate of 10,000 A/s. Take the resistivity of copper as 1.72 x 10^-8 ohms/m

Calculate the approximate resistance and inductance of an air cored solenoid of mean diameter of 1 cm, 1m long wound with 1000 turns of copper wire, 0.5 mm in diameter. What potential difference exists between the terminals of the solenoid at the instant when the current is 1 A and increasing at the rate of 10,000 A/s. Take the resistivity of copper as 1.72 x 10^-8 ohms/m Problem Question Calculate the approximate resistance and inductance of an air cored solenoid…

A coil of 1000 turns is wound on a ring of silicon steel having mean diameter of 10cm and relative permeability 1200. Its cross-sectional area is 12 sq cm when a current of 5A flows through the coil. Find (i) Flux in the core (ii) Inductance of the coil (iii) Induced emf if the flux falls to zero in 20m sec

A coil of 1000 turns is wound on a ring of silicon steel having mean diameter of 10cm and relative permeability 1200. Its cross-sectional area is 12 sq cm when a current of 5A flows through the coil. Find (i) Flux in the core (ii) Inductance of the coil (iii) Induced emf if the flux falls to zero in 20m sec Problem Question A coil of 1000 turns is wound on a ring of silicon steel having mean diameter of…

A coil of 150 turns is linked with a flux of 0.01 wb when carrying a current of 10A. Calculate the inductance of the coil if the current is uniformly reversed in 0.01 sec. Calculate the induced EMF

A coil of 150 turns is linked with a flux of 0.01 wb when carrying a current of 10A. Calculate the inductance of the coil if the current is uniformly reversed in 0.01 sec. Calculate the induced EMF Problem Question A coil of 150 turns is linked with a flux of 0.01 wb when carrying a current of 10A. Calculate the inductance of the coil if the current is uniformly reversed in 0.01 sec. Calculate the induced EMF Topic Electromagnetism…

The winding of an electromagnet is wound with 96 turns and has a resistance of 56 ohms, the exciting voltage if 250 V and flux linking the coil is 5 mwb. Find the energy stored in magnetic field, if the current is reversed in 0.1 and what emf is induced in the coil?

The winding of an electromagnet is wound with 96 turns and has a resistance of 56 ohms, the exciting voltage if 250 V and flux linking the coil is 5 mwb. Find the energy stored in magnetic field, if the current is reversed in 0.1 and what emf is induced in the coil? Problem Question The winding of an electromagnet is wound with 96 turns and has a resistance of 56 ohms, the exciting voltage if 250 V and flux…

Find the inductance of a coil of 200 turns wound on a paper core tube of 25 cm length and 5 cm radius. Also calculate energy stored in it if current rises from zero to 5A. (μ_r for paper=1)

Find the inductance of a coil of 200 turns wound on a paper core tube of 25 cm length and 5 cm radius. Also calculate energy stored in it if current rises from zero to 5A. (μ_r for paper=1) Problem Question Find the inductance of a coil of 200 turns wound on a paper core tube of 25 cm length and 5 cm radius. Also calculate energy stored in it if current rises from zero to 5A. (μ_r for paper=1)…

A coil of 500 turns wound on a core of non-magnetic material (μ_r=1) has an inductance of 9mH. Calculate (a) the flux produced by a current of 10A (b) the average value of EMF induced when the current is reversed in 10ms

A coil of 500 turns wound on a core of non-magnetic material (μ_r=1) has an inductance of 9mH. Calculate (a) the flux produced by a current of 10A (b) the average value of EMF induced when the current is reversed in 10ms Problem Question A coil of 500 turns wound on a core of non-magnetic material (μ_r=1) has an inductance of 9mH. Calculate (a) the flux produced by a current of 10A (b) the average value of EMF induced when…

An iron ring has a mean circumference of 50cm and a cross sectional area of 4cm^2 it is wound with 600 turns of wire if the μ_r of iron is 400. Calculate the inductance of the coil and the energy stored in the magnetic field if the current flowing through the coil is 10A

An iron ring has a mean circumference of 50cm and a cross sectional area of 4cm^2 it is wound with 600 turns of wire if the μ_r of iron is 400. Calculate the inductance of the coil and the energy stored in the magnetic field if the current flowing through the coil is 10A Problem Question An iron ring has a mean circumference of 50cm and a cross sectional area of 4cm^2 it is wound with 600 turns of wire…

A 10 pole induction motor supplied by a 6 pole alternator which is driven at 1200 rpm. If the motor runs at slip of 3% what is its speed?

A 10 pole induction motor supplied by a 6 pole alternator which is driven at 1200 rpm. If the motor runs at slip of 3% what is its speed? Problem Question A 10 pole induction motor supplied by a 6 pole alternator which is driven at 1200 rpm. If the motor runs at slip of 3% what is its speed? Topic Induction Motor Induction Motor Problems The frequency of the EMF in the stator of a 4 pole induction motor…

A 3∅, 4 pole, 400 V, 50 Hz Induction motor runs with a slip of 4%, find the rotor speed and frequency

A 3∅, 4 pole, 400 V, 50 Hz Induction motor runs with a slip of 4%, find the rotor speed and frequency Problem Question A 3∅, 4 pole, 400 V, 50 Hz Induction motor runs with a slip of 4%, find the rotor speed and frequency Topic Induction Motor Induction Motor Problems The frequency of the EMF in the stator of a 4 pole induction motor is 50 Hz and in the rotor is 1.5 Hz. What is the slip…

What is the slip speed, slip and at what speed rotor runs if the frequency of the EMF in the stator of a 4 pole, 3∅ Induction motor is 50 Hz and in the rotor is 1.5 Hz?

What is the slip speed, slip and at what speed rotor runs if the frequency of the EMF in the stator of a 4 pole, 3∅ Induction motor is 50 Hz and in the rotor is 1.5 Hz? Problem Question What is the slip speed, slip and at what speed rotor runs if the frequency of the EMF in the stator of a 4 pole, 3∅ Induction motor is 50 Hz and in the rotor is 1.5 Hz? Topic Induction…

A 4 pole, 3∅, Induction motor operates from a supply whose frequency is 50Hz. Calculate (i) Synchronous speed (ii) The speed of the rotor when the slip is 0.04 (iii) The frequency of the rotor current when the slip is 0.03 (iv) The frequency of the rotor current at standstill.

A 4 pole, 3∅, Induction motor operates from a supply whose frequency is 50Hz. Calculate (i) Synchronous speed (ii) The speed of the rotor when the slip is 0.04 (iii) The frequency of the rotor current when the slip is 0.03 (iv) The frequency of the rotor current at standstill. Problem Question A 4 pole, 3∅, Induction motor operates from a supply whose frequency is 50Hz. Calculate (i) Synchronous speed (ii) The speed of the rotor when the slip is…

A 4 pole, 3300V, 50 Hz, Induction motor runs at rated frequency and voltage. The frequency of the rotor currents is 2.5 Hz. Find slip and running speed

A 4 pole, 3300V, 50 Hz, Induction motor runs at rated frequency and voltage. The frequency of the rotor currents is 2.5 Hz. Find slip and running speed Problem Question A 4 pole, 3300V, 50 Hz, Induction motor runs at rated frequency and voltage. The frequency of the rotor currents is 2.5 Hz. Find slip and running speed Topic Induction Motor Induction Motor Problems The frequency of the EMF in the stator of a 4 pole induction motor is 50…

An 8 pole 3∅ alternator runs at 750 rpm and supplies power to 6 pole 3∅ induction motor which runs at 970 rpm. What is the slip of the induction motor?

An 8 pole 3∅ alternator runs at 750 rpm and supplies power to 6 pole 3∅ induction motor which runs at 970 rpm. What is the slip of the induction motor? Problem Question An 8 pole 3∅ alternator runs at 750 rpm and supplies power to 6 pole 3∅ induction motor which runs at 970 rpm. What is the slip of the induction motor? Topic Induction Motor Induction Motor Problems The frequency of the EMF in the stator of a…

A 3∅, 6 pole, 50 Hz Induction motor has a slip of 1% at no load and 3% at full load. Determine (i)Synchronous speed, (ii)No load speed, (iii)Full load speed, (iv)Frequency of rotor current at stand still (v)Frequency of rotor current at full load

A 3∅, 6 pole, 50 Hz Induction motor has a slip of 1% at no load and 3% at full load. Determine (i)Synchronous speed, (ii)No load speed, (iii)Full load speed, (iv)Frequency of rotor current at stand still (v)Frequency of rotor current at full load Problem Question A 3∅, 6 pole, 50 Hz Induction motor has a slip of 1% at no load and 3% at full load. Determine (i)Synchronous speed, (ii)No load speed, (iii)Full load speed, (iv)Frequency of rotor current…