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Which type of winding is used in 3 phase shell-type transformer ?
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asked
Mar 19, 2018
by
anonymous
type
winding
used
phase
shell-type
transformer
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1
Answer
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answered
Mar 19, 2018
by
anonymous
Sandwich type
winding is used in 3 phase shell-type transformer.
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Mar 19, 2018
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anonymous
A shell-type transformer has?
Last answer:
A shell-type transformer has reduced magnetic leakage.
shell-type
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Primary winding of a transformer?
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Primary winding of a transformer could either be a low voltage or high voltage winding.
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State any four characteristics of core type transformer.
State any four characteristics of core type transformer.
Last answer:
Characteristics of core type transformer: i) It has one window. ii) It has one magnetic circuit. iii) Core surrounds the winding. iv) Average length of core is more. v) Area of cross ... Better cooling for winding. vii) Mechnical strength is comparatively less. viii) Repair and maintenance is easy.
core
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Mar 20, 2018
by
anonymous
In split phase motor main winding is of?
Last answer:
In split phase motor main winding is of thick wire placed at the bottom of the slots.
split
phase
motor
main
winding
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49
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1
answer
asked
Mar 20, 2018
by
anonymous
In a capacitor start motor, the phase displacement between starting and running winding can be nearly?
Last answer:
In a capacitor start motor, the phase displacement between starting and running winding can be nearly 90°.
capacitor
start
motor
phase
displacement
between
starting
running
winding
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130
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answer
asked
Mar 20, 2018
by
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In a split phase motor, the running winding should have?
Last answer:
In a split phase motor, the running winding should have low resistance and high inductance.
split
phase
motor
running
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1
answer
asked
Mar 20, 2018
by
anonymous
The short circuit in any winding of the transformer is the result of?
Last answer:
The short circuit in any winding of the transformer is the result of impulse voltage.
short
circuit
winding
transformer
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132
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1
answer
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Mar 20, 2018
by
anonymous
Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a?
Last answer:
Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a magnetic relay.
starting
winding
single
phase
motor
refrigerator
disconnected
circuit
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153
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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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85
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Mar 20, 2018
by
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In D.C. machines fractional pitch winding is used?
Last answer:
In D.C. machines fractional pitch winding is used to reduce the sparking.
dc
machines
fractional
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302
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1
answer
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Mar 18, 2018
by
anonymous
The damping winding in synchronous motor is generally used to?
The damping winding in synchronous motor is generally used to?
Last answer:
The damping winding in synchronous motor is generally used to provide starting torque and prevent hunting.
damping
winding
synchronous
motor
used
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121
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answer
asked
May 8, 2018
by
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A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts
A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary? (A) 30 Volts (B) 480 Volts (C) 120 Volts (D) 60 Volts
Last answer:
A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary? (A) 30 Volts (B) 480 Volts (C) 120 Volts (D) 60 Volts
transformer
secondary
winding
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92
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answer
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Mar 11, 2018
by
anonymous
Which type of motor is used in lift?
Which type of motor is used in lift?
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Synchronous motor
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60
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May 8, 2018
by
anonymous
A _________ is used to measure the stator % winding temperature of the generator.
A _________ is used to measure the stator % winding temperature of the generator. (A) Thermocouple (B) Pyrometer (C) Resistance thermometer (D) Thermometer
Last answer:
A Resistance thermometer is used to measure the stator % winding temperature of the generator.
used
measure
stator
winding
temperature
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answer
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Mar 20, 2018
by
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A centrifugal switch is used to disconnect starting winding when motor has?
Last answer:
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centrifugal
switch
used
disconnect
starting
winding
motor
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200
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answer
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Sep 30, 2017
by
anonymous
does the high voltage side of Transformer winding have more number of turns?
Last answer:
yes High Voltage side of Transformer winding have more number of turns. and low voltage side of Transformer winding have less number of turns.
transformer
high
voltage
turns
winding
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82
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1
answer
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May 16, 2020
by
anonymous
Single phase transformer
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Single phase Transformer Transformer
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Mar 15, 2018
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Which type of starter is used to start the DC motor?
type
starter
used
start
dc
motor
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59
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answers
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Mar 9, 2018
by
anonymous
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Transformer coupling introduces Cross over distortion.
transformer
coupling
type
distortion
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Mar 21, 2018
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Induction type single phase energy meters measure electric energy in?
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type
single
phase
energy
meters
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Mar 21, 2018
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A phase shifting transformer is used in conjunction with?
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phase
shifting
transformer
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Mar 22, 2018
by
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What type of biasing is used in CE amplifier?
What type of biasing is used in CE amplifier?
type
biasing
used
ce
amplifier
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answers
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Sep 6, 2018
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With a neat sketch explain working of 1 phase dynamometer type power factor meter.
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phase
dynamometer
type
power
factor
meter
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86
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answer
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Mar 20, 2018
by
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The type of D.C. motor used for shears and punches is?
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dc
motor
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punches
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101
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answer
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Mar 10, 2018
by
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What type of meter is used to measure current?
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Ammeter
type
meter
used
measure
current
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May 8, 2018
by
anonymous
Cylindrical type transformer has:
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Last answer:
Cylindrical type transformer has: Single magnetic circuit
cylindrical
type
transformer
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81
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1
answer
asked
Mar 20, 2018
by
anonymous
Which relays are used for phase faults on long line?
Last answer:
Impedance relays are used for phase faults on long line.
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used
phase
faults
long
line
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61
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1
answer
asked
Mar 21, 2018
by
anonymous
The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a?
Last answer:
The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a two-phase winding.
stator
phase
shifting
transformer
use
conjunction
ac
potentiometer
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120
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1
answer
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Mar 15, 2018
by
anonymous
What are the five types of single phase motors used in the industry?
What are the five types of single phase motors used in the industry?
five
types
single
phase
motors
used
industry
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66
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0
answers
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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339
views
4
answers
asked
May 3, 2018
by
anonymous
A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage
A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he
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A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he 0.52
single
phase
transformer
resistance
reactance
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229
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1
answer
asked
Apr 27, 2020
by
anonymous
Explain the procedure to perform Short Circuit test on single phase transformer with circuit diagram.
Explain the procedure to perform Short Circuit test on single phase transformer with circuit diagram.
explain
the
procedure
to
perform
short
circuit
test
on
single
phase
transformer
with
diagram
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69
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0
answers
asked
Mar 19, 2018
by
anonymous
Which winding in a transformer has more number of turns ?
Last answer:
High voltage winding in a transformer has more number of turns.
transformer
turns
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114
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1
answer
asked
Mar 19, 2018
by
anonymous
In the transformer which winding has got more cross-sectional area?
Last answer:
In the transformer low voltage winding has got more cross-sectional area.
transformer
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133
views
1
answer
asked
Mar 20, 2018
by
anonymous
The inverse definite mean time relays are used for over current and earth fault protection of transformer against?
Last answer:
The inverse definite mean time relays are used for over current and earth fault protection of transformer against internal short-circuits.
inverse
definite
mean
time
relays
used
over
current
earth
fault
protection
transformer
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2.5k
views
1
answer
asked
Mar 10, 2018
by
anonymous
Explain the electrical losses of magnetic materials used for the cores of inductors and transformer.
Explain the electrical losses of magnetic materials used for the cores of inductors and transformer.
electrical
losses
magnetic
materials
used
cores
inductors
transformer
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68
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0
answers
asked
Apr 30, 2018
by
anonymous
IDMT relays are used to protect the transformer against :
IDMT relays are used to protect the transformer against : (A) Internal short -circuits (B) Open circuits (C) External short circuits (D) Oil leakage
Last answer:
IDMT relays are used to protect the transformer against : External short circuits
idmt
relays
used
protect
transformer
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2.7k
views
1
answer
asked
Mar 19, 2018
by
anonymous
Which winding of the transformer has less cross-sectional area ?
Last answer:
High voltage winding of the transformer has less cross-sectional area.
transformer
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57
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1
answer
asked
Aug 13, 2019
by
Alacrity
the volt per turn of a certain single phase transformers is 1.7. the transformer has a step ratio of 3825/255volt. calculate the respective number of turns in each winding
single
phase
transformers
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49
views
0
answers
asked
Apr 29, 2018
by
anonymous
Damper winding is provided in 3 phase synchronous motors to :
Damper winding is provided in 3 phase synchronous motors to :
Last answer:
Damper winding is provided in 3 phase synchronous motors to : provide starting torque and prevent hunting
damper
winding
3-phase
synchronous
motors
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69
views
1
answer
asked
Jan 8
by
anonymous
Compare core type transformer and shell type transformer on the following parameters. (i) Types of winding used, (ii) Application
Compare core type transformer and shell type transformer on the following parameters. (i) Types of winding used, (ii) Application
Last answer:
Ans:
dc
machines
transformers
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5
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1
answer
asked
Mar 20, 2018
by
anonymous
The starting winding of a single-phase motor is placed in?
Last answer:
The starting winding of a single-phase motor is placed in stator.
starting
winding
single-phase
motor
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66
views
1
answer
asked
Mar 20, 2018
by
anonymous
If starting winding of a single-phase induction motor is left in the circuit, it will?
Last answer:
If starting winding of a single-phase induction motor is left in the circuit, it will draw excessive current and overheat.
starting
winding
single-phase
induction
motor
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186
views
1
answer
asked
Mar 20, 2018
by
anonymous
In split-phase motor auxiliary winding is of?
Last answer:
In split-phase motor auxiliary winding is of thin wire placed at the top of the slots.
split-phase
motor
auxiliary
winding
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45
views
1
answer
asked
Mar 20, 2018
by
anonymous
In D.C. generators, lap winding is used for?
Last answer:
In D.C. generators, lap winding is used for low voltage, high current.
lap
winding
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60
views
1
answer
asked
Mar 19, 2018
by
anonymous
The thickness of laminations used in a transformer is usually?
Last answer:
The thickness of laminations used in a transformer is usually 0.4 mm to 0.5 mm.
transformer
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67
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1
answer
asked
Mar 19, 2018
by
anonymous
The core used in high frequency transformer is usually?
Last answer:
The core used in high frequency transformer is usually air core .
transformer
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49
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1
answer
asked
Apr 29, 2018
by
anonymous
Aluminium is not used as winding wire for the armature of a dc machine because
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Last answer:
Aluminium is not used as winding wire for the armature of a dc machine because (2) a large winding space is taken by aluminium conductors and creates jointing problems (3) the thermal conductivity of aluminium is low (4) aluminium has low conductivity as compared to copper
aluminium
winding
wire
armature
dc
machine
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489
views
1
answer
asked
Mar 19, 2018
by
anonymous
The chemical used in breather for transformer should have the quality of?
Last answer:
The chemical used in breather for transformer should have the quality of cleansing the transformer oil.
transformer
breather
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95
views
1
answer
asked
Jul 26, 2019
by
anonymous
Explain construction and working of single phase Auto transformer.
Explain construction and working of single phase Auto transformer.
Last answer:
Construction of single phase auto transformer: (i) It has only one winding wound on a laminated circular magnetic core. (ii) The core is made of silicon steel stampings. (iii) The two terminals of the ... help of handle. 5) The same transformer can be used as step-up or step down auto-transformer
transformer
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109
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1
answer
...