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A hysteresis motor works on the principle of?
asked
Mar 20, 2018
by
anonymous
hysteresis
motor
works
principle
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1
Answer
answered
Mar 20, 2018
by
anonymous
A hysteresis motor works on the principle of
hysteresis loss.
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asked
May 8, 2018
by
anonymous
The transformer works on the principle of:
The transformer works on the principle of: (A) Mutual induction (B) Mutual capacitance (C) All of the above (D) None of the above
Last answer:
The transformer works on the principle of: Mutual induction
transformer
works
principle
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58
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1
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asked
Mar 20, 2018
by
anonymous
The direction of rotation of an hysteresis motor is determined by?
Last answer:
The direction of rotation of an hysteresis motor is determined by position of shaded pole with respect to main pole.
direction
rotation
hysteresis
motor
determined
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130
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1
answer
asked
Dec 16, 2017
by
anonymous
How does an electric motor works?
How does an electric motor works?
Last answer:
In the electric motor there are two types of part 1)moving and 2)stationary In stationary part containing field winding whis use to provide uniform maganetic field it at inner side of yoke In moving ... on it and this force is from all direction we can say it is torque.and motor armature rotates
electric
motor
works
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98
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1
answer
asked
Mar 20, 2018
by
anonymous
The rotor of a hysteresis motor is made of?
Last answer:
The rotor of a hysteresis motor is made of chrome steel.
rotor
hysteresis
motor
made
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1
answer
asked
Mar 20, 2018
by
anonymous
In a hysteresis motor, the rotor must have?
Last answer:
In a hysteresis motor, the rotor must have retentivity.
hysteresis
motor
rotor
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1
answer
asked
May 7, 2020
by
anonymous
Describe with neat sketch working of hysteresis motor.
Describe with neat sketch working of hysteresis motor.
Last answer:
Working: When stator is energized with single phase ac supply, rotating magnetic field is produced because of starting (auxiliary) and main windings, which remain in circuit permanently. The ... the principle of magnetic locking this motor either rotates at synchronous speed or not at all.
describe
with
neat
sketch
working
of
hysteresis
motor
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1
answer
asked
May 22, 2020
by
anonymous
Explain the working principle of induction motor.
Explain the working principle of induction motor.
Last answer:
Working principle of induction motor: * When the motor is excited with three-phase supply, three-phase stator winding carries three-phase currents & produces a rotating magnetic field of constant magnitude and ... , which tend to move the rotor in the same direction as the rotating magnetic field.
working
principle
induction
motor
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1
answer
asked
Apr 27, 2020
by
anonymous
State the principle of operation of d.c. motor.
State the principle of operation of d.c. motor.
Last answer:
When a current carrying conductor is placed in a magnetic field, the conductor experiences the force. The magnitude of force is given by F = BIL newton where F – Force B – maximum flux density I – Current L – Length of conductor
state
the
principle
of
operation
d
c
motor
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1
answer
asked
Mar 15, 2018
by
anonymous
What is the principle of synchronous motor?
What is the principle of synchronous motor?
principle
synchronous
motor
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answers
asked
Mar 15, 2018
by
anonymous
What is the principle of AC motor?
What is the principle of AC motor?
principle
ac
motor
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53
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0
answers
asked
Mar 15, 2018
by
anonymous
What is the principle of DC motor?
What is the principle of DC motor?
principle
dc
motor
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0
answers
asked
Aug 9, 2019
by
anonymous
Explain in brief how anti-lock braking system works
Explain in brief how anti-lock braking system works
Last answer:
An ABS is a system on motor vehicles which prevents the wheels from locking while braking stopping safely is one of the most important functions a motor vehicle can perform. Diagram: ... to decrease the pressure on the braking circuit, effectively reducing the braking force on that wheel.
anti-lock
braking
system
works
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1
answer
asked
Dec 30, 2017
by
anonymous
How do relay works ?
How do relay works ?
Last answer:
Relay working like contact it is noise less
relay
works
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101
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1
answer
asked
Aug 8, 2018
by
anonymous
Explain the hysteresis loop of a magnetic material with neat diagram.
Explain the hysteresis loop of a magnetic material with neat diagram.
Last answer:
Hysteresis loop of magnetic material: The circuit arrangement for plotting the hysteresis loop is shown in figure given below. The electromagnetic part consists of a coil wound on the iron ring ... one magnetic reversal is called hysteresis loop. Meaning of hysteresis is to lag behind.
hysteresis
loop
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1
answer
asked
Mar 25, 2018
by
anonymous
If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be?
If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be?
Last answer:
If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be large.
area
hysteresis
loop
material
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209
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1
answer
asked
Mar 25, 2018
by
anonymous
In a magnetic material hysteresis loss takes place primarily due to?
In a magnetic material hysteresis loss takes place primarily due to?
Last answer:
In a magnetic material hysteresis loss takes place primarily due to it high retentivity.
magnetic
material
hysteresis
loss
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167
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1
answer
asked
Sep 4, 2018
by
anonymous
What is magnetic hysteresis? What is the cause of hysteresis?
What is magnetic hysteresis? What is the cause of hysteresis?
Last answer:
Magnetic hysteresis: When a magnetic material is subjected to cycle of magnetization, it is found that flux density (B) in the material lags behind applied magnetizing force (H). This ... the movement of orientation, due to which the flux density lags behind the magnetic field intensity.
magnetic
hysteresis
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1
answer
asked
Apr 29, 2018
by
anonymous
Principle of Thermocouple is based on :
Principle of Thermocouple is based on : (A) Thomson effect (C) Seebeck effect (B) Peltier effect (D) Kelvin effect
Last answer:
The principle is based on Seebeck effect.
principle
thermocouple
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68
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2
answers
asked
Sep 4, 2018
by
anonymous
State the factors affecting hysteresis loss.
State the factors affecting hysteresis loss.
Last answer:
i) Flux density ii) Frequency iii) Volume of the magnetic material iv) Nature of magnetic material
factors
affecting
hysteresis
loss
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37
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1
answer
asked
Apr 26, 2018
by
anonymous
The term hysteresis is associated with
The term hysteresis is associated with (A) On-Off control (B) P-I control (C) Feed forward control (D) Ratio control
Last answer:
The term hysteresis is associated with On-Off control
hysteresis
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40
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1
answer
asked
Mar 15, 2018
by
anonymous
What is the difference between eddy current and hysteresis loss?
What is the difference between eddy current and hysteresis loss?
Last answer:
Loss occurred by magnetising and demagnetising process is called histerisis loss and the current flowed due to the magnetic field produced by the electric field applied is called eddy current losses
difference
between
eddy
current
hysteresis
loss
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2.9k
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1
answer
asked
May 7, 2020
by
anonymous
State Magneto-striction. Draw Hysteresis loop for : (i) High silicon steel (ii) Copper (iii) Soft iron (iv) Wood
State Magneto-striction. Draw Hysteresis loop for : (i) High silicon steel (ii) Copper (iii) Soft iron (iv) Wood
Last answer:
Magneto-striction: It is the change in dimensions of ferro magnetic material when it is magnetized for eg. Silicon steel, iron or any ferromagnetic material. i) Hysteresis loop for High silicon steel : ... loop for Soft iron : iv) Hysteresis loop for Copper and Wood :
state
magneto-striction
draw
hysteresis
loop
for
i
high
silicon
steel
ii
copper
iii
soft
iron
iv
wood
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101
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1
answer
asked
Apr 29, 2018
by
anonymous
Hysteresis is commonly found in ______
Hysteresis is commonly found in ______ A) ferromagnetic materials B) ferroelectric materials C) both A and B D) none of these
Last answer:
Hysteresis is commonly found in ______ A) ferromagnetic materials B) ferroelectric materials C) both A and B D) none of these
hysteresis
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73
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1
answer
asked
Mar 20, 2018
by
anonymous
As hysteresis motors are free from mechanical and magnetic vibrations therefore these are considered as suitable for?
Last answer:
As hysteresis motors are free from mechanical and magnetic vibrations therefore these are considered as suitable for sound equipment.
hysteresis
motors
mechanical
magnetic
vibrations
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90
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1
answer
asked
Feb 16, 2018
by
anonymous
Explain hysteresis loss, eddy current loss and skin effect limitations with reference to magnetic material.
Explain hysteresis loss, eddy current loss and skin effect limitations with reference to magnetic material.
Last answer:
Hysteresis loss: Hysteresis loss is a loss which occurs due to the friction of magnetic domain due to the change in magnetic field in ferromagnetic material like iron. Hysteresis loss causes power loss ... loss in transformer is given by, We=Kef2Kf2Bm2watts Skin effect limitations:
explain
hysteresis
loss
eddy
current
skin
effect
limitations
magnetic
material
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531
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1
answer
asked
Mar 20, 2018
by
anonymous
The running winding of a single phase motor on testing with meggar is found to be ground...
The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be?
Last answer:
The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be at the slot edge where coil enters or comes out of the slot.
running
winding
single
phase
motor
testing
meggar
ground
location
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84
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1
answer
asked
Mar 18, 2018
by
anonymous
The synchronous motor which works on leading power factor and does not drive any mechanical load is called?
The synchronous motor which works on leading power factor and does not drive any mechanical load is called?
Last answer:
The synchronous motor which works on leading power factor and does not drive any mechanical load is called synchronous condenser.
synchronous
motor
leading
power
factor
drive
mechanical
load
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69
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1
answer
asked
Mar 20, 2018
by
anonymous
A universal motor can run on?
Last answer:
A universal motor can run on either A.C. or D.C.
universal
motor
run
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48
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1
answer
asked
Mar 20, 2018
by
anonymous
A schrage motor can run on?
Last answer:
A schrage motor can run on zero slip, negative slip, positive slip.
schrage
motor
run
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50
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1
answer
asked
Mar 20, 2018
by
anonymous
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by...
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?
Last answer:
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will not start at all.
capacitor-start
single
phase
induction
motor
switched
supply
capacitor
inductor
equivalent
reactance
value
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100
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1
answer
asked
Mar 20, 2018
by
anonymous
The motor used on small lathes is usually?
Last answer:
The motor used on small lathes is usually single-phase capacitor run motor.
motor
used
small
lathes
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125
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1
answer
asked
Mar 20, 2018
by
anonymous
Single phase induction motor usually operates on?
Last answer:
Single phase induction motor usually operates on 0.6 power factor lagging.
single
phase
induction
motor
operates
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97
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1
answer
asked
May 27, 2020
by
anonymous
State working principle of alternator. State the meaning self and separate excitation.
State working principle of alternator. State the meaning self and separate excitation.
Last answer:
Working principle of alternator: When a conductor is moved in magnetic field or a magnetic field moved with respect to conductor, according to Faraday's law of electromagnetic induction, the conductor ... like battery or shaft-mounted exciter, then the excitation is said to be separate excitation.
working
principle
alternator
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92
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1
answer
asked
May 7, 2020
by
anonymous
Explain with neat sketch the working principle of MIG.
Explain with neat sketch the working principle of MIG.
Last answer:
In metal-arc inert gas welding the Weld area is shielded by an effectively inert atmosphere of argon, helium, carbon dioxide, or various other gas mixtures . The consumable bare Wire is fed automatically ... of the molten-weld puddle. Multiple-weld layers can be deposited at the joint.
explain
with
neat
sketch
the
working
principle
of
mig
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67
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1
answer
asked
May 3, 2020
by
anonymous
Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.
Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.
Last answer:
Thyristor operated dimmer: A popular thyristor operated dimmer circuit employ TRIAC-DIAC phase control for low AC power control. During each half-cycle, the capacitor charges through (R1+VR1). When the ... time constant {C (R1+VR1)}. Thus by reducing VR1 the lamp brightness can be increased.
describe
the
working
principle
of
thyristor
operated
dimmer
with
help
circuit
diagram
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169
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1
answer
asked
Aug 10, 2019
by
anonymous
State the working principle of gears and give its applications.
State the working principle of gears and give its applications.
Last answer:
Working Principle: Gears are mechanical elements which transmit motion by means of successively engaging teeth. Gears are used to transmit motion from one shaft to another or between ... Agricultural equipment. Industrial construction. Mining equipment. Automotive equipment.
working
principle
gears
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84
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1
answer
asked
Aug 5, 2019
by
anonymous
Describe the working principle of photoelectric pickup type tacho-generator.
Describe the working principle of photoelectric pickup type tacho-generator.
Last answer:
Working: Working principle: The light passes through the holes available on the rotating disc with a specific interval, depends on the angular speed of disc having equidistant holes. The frequency of this light pulses ... by N=f/HS N=speed f=frequency Hs=holes on the disc
working
principle
photoelectric
pickup
type
tacho-generator
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258
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1
answer
asked
Sep 5, 2018
by
anonymous
Explain the operating principle of LASER and list applications of LASER diode.
Explain the operating principle of LASER and list applications of LASER diode.
Last answer:
A basic construction of Laser diode is as shown . A PN junction is formed by two layers of doped gallium arsenide. There is highly reflective surface at one end of PN junction and ... 6. laser scanning and light beam illumination. 7. Military applications 8. Medical surgery 9.Diamond cutting
operating
principle
laser
applications
diode
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202
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1
answer
asked
Aug 12, 2018
by
anonymous
State the working principle of transformer.
State the working principle of transformer.
Last answer:
Working principle of transformer : Transformer works on the principle of mutual electromagnetic induction. When AC voltage is applied to the primary winding it causes ac current to flow through primary ... the secondary winding. The current flows in the secondary circuit if load is connected.
transformer
working
principle
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1
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2.8k
views
6
answers
asked
Mar 15, 2018
by
anonymous
What is the principle of DC generator?
What is the principle of DC generator?
principle
dc
generator
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59
views
0
answers
asked
Mar 11, 2018
by
anonymous
What is the working principle of pressure transmitter?
What is the working principle of pressure transmitter?
working
principle
pressure
transmitter
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103
views
0
answers
asked
Apr 14, 2018
by
anonymous
A servo motor works on the same basic principle as that of a : -
A servo motor works on the same basic principle as that of a : - a) two phase induction motor b) single phase induction motor c) three phase induction motor d) synchronous motor
Last answer:
A servo motor works on the same basic principle as that of a : - two phase induction motor
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44
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1
answer
asked
Oct 13, 2019
by
anonymous
operating principle of PUT.
operating principle of PUT.
Last answer:
Constructional diagram & Operating principle of PUT: The PUT is a PNPN device similar to SCR, but its operation is similar to the UJT. The PUT behave like a UJT whose trigger voltage VP can be set ... low resistance and VAK ≈ 1V). The PUT is also referred to as a complementary SCR (CSCR).
operating
principle
put
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71
views
1
answer
asked
Aug 5, 2019
by
anonymous
State principle of operation of piezo-electric transducer. State its application.
State principle of operation of piezo-electric transducer. State its application.
Last answer:
The piezoelectric element used for converting mechanical movement into electric signals. The mechanical deformation generates charges and this charge appears as a voltage across the electrodes. ... destructive test (NDT) equipments 6. Piezoelectric materials are used in ultrasonic transducers.
principle
operation
piezo-electric
transducer
application
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58
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1
answer
asked
Jul 26, 2019
by
anonymous
Explain construction and working principle of single phase transformer.
Explain construction and working principle of single phase transformer.
Last answer:
A single phase transformers is an electrical device that accepts single-phase AC power and outputs single-phase AC. PRINCIPLE... The single-phase transformer works on the principle of ... and secondary windings. Thin steel laminations shall be employed to prevent power losses from the core.
construction
working
principle
single
phase
transformer
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325
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4
answers
asked
Sep 8, 2018
by
anonymous
Describe principle of operation of Doppler type ultrasonic flow meter with diagram.
Describe principle of operation of Doppler type ultrasonic flow meter with diagram.
Last answer:
Diagram: Working: The flow meter consists of a crystal transducer mounted outside the pipe in which flow is to be measured. This transducer is a piezoelectric crystal which ... , so the frequency of the reflected wave is shifted to particle velocity, according to Doppler principle.
principle
operation
doppler
type
ultrasonic
flow
meter
diagram
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93
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1
answer
asked
Sep 6, 2018
by
anonymous
State working principle of earth tester.
State working principle of earth tester.
Last answer:
Earth tester:-The resistance of the earth is measured with the help of earth tester. It consists of a hand cranked type generator, the magnet poles, crossed coils and flexible spirals. It consists ... deflection of the pointer will indicate directly resistance in ohm of the earth under test.
principle
earth
tester
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47
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2
answers
asked
Sep 6, 2018
by
anonymous
Draw construction of Megger and write operating principle of it.
Draw construction of Megger and write operating principle of it.
Last answer:
Megger: Working: Two coils the current coil and pressure coil are mounted at an angle on the same spindle and form the part of the moving system. These coils are connected to a small hand driven ... . When the instrument is not working the pointer may rest at any position on the dial.
construction
megger
operating
principle
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215
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2
answers
asked
Sep 5, 2018
by
anonymous
State working principle of PMMC instrument.
State working principle of PMMC instrument.
Last answer:
Working Principle of PMMC Instrument: When current carrying conductor is placed in a constant magnetic field, it experiences a force proportional to the current and produces proportional deflection torque.
working
principle
pmmc
instrument
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1
answer
asked
Sep 4, 2018
by
anonymous
Draw symbol of LED and explain it’s working principle.
Draw symbol of LED and explain it’s working principle.
Last answer:
Construction of LED: The basic structure of LED is shown in fig.(a). The active region exists between the p and n regions. The light emerges from the active side in all the directions when electron hole-pairs ... fig.(c). In this way an LED emits light. This is the principle of operation of LED.
draw
symbol
led
explain
working
principle
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2
answers
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