Which winding in a transformer has more number of turns ?

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asked Mar 19, 2018 by anonymous

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asked 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.

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asked Mar 19, 2018 by anonymous

In a power or distribution transformer about 10 percent end turns are heavily insulated?

Last answer: In a power or distribution transformer about 10 percent end turns are heavily insulated to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns.

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asked May 8, 2018 by anonymous

Increasing the number of turns of wire on the secondary of a transformer will

Increasing the number of turns of wire on the secondary of a transformer will (A) Decrease the secondary current (B) Increase the primary current (C) Have no effect on the secondary current (D) Increase the secondary current

Last answer: Increasing the number of turns of wire on the secondary of a transformer will Decrease the secondary current

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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.

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asked May 8, 2018 by anonymous

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

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92 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.

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57 views 1 answer

asked Apr 26, 2018 by anonymous

lt the length, number of turns and area of a coil are doubled, the inductance of the coil

Last answer: lt the length, number of turns and area of a coil are doubled, the inductance of the coil is quadrupled

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asked Mar 19, 2018 by anonymous

Which type of winding is used in 3 phase shell-type transformer ?

Last answer: Sandwich type winding is used in 3 phase shell-type transformer.

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108 views 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

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asked Mar 19, 2018 by anonymous

Primary winding of a transformer?

Last answer: Primary winding of a transformer could either be a low voltage or high voltage winding.

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62 views 1 answer

asked Jun 11, 2019 by anonymous

Turns ratio formula

Turns ratio

Last answer: Turns ratio formula

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65 views 1 answer

asked May 22, 2020 by anonymous

State why a transformer always have an efficiency of more than 90%.

Last answer: As transformer is static device with no moving parts, the losses due to friction & windage are completely absent. Hence transformer has efficiency of more than 90%.

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31 views 1 answer

asked Mar 19, 2018 by anonymous

If a transformer is switched on to a voltage more than the rated voltage?

Last answer: If a transformer is switched on to a voltage more than the rated voltage its power factor will deteriorate.

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70 views 1 answer

asked Mar 19, 2018 by anonymous

An ideal transformer is one which has?

Last answer: An ideal transformer is one which has no losses and magnetic leakage.

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70 views 1 answer

asked Mar 19, 2018 by anonymous

No-load current of a transformer has?

Last answer: No-load current of a transformer has small magnitude and low power factor.

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45 views 1 answer

asked Mar 19, 2018 by anonymous

The magnetising current of a transformer is usually small because it has?

Last answer: The magnetising current of a transformer is usually small because it has small air gap.

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61 views 1 answer

asked Mar 19, 2018 by anonymous

A shell-type transformer has?

Last answer: A shell-type transformer has reduced magnetic leakage.

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51 views 1 answer

asked Mar 19, 2018 by anonymous

In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are?

Last answer: In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are hysteresis and eddy current losses.

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104 views 1 answer

asked Mar 19, 2018 by anonymous

An ideal transformer has infinite values of primary and secondary inductances. The statement is?

Last answer: An ideal transformer has infinite values of primary and secondary inductances. The statement is false.

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136 views 1 answer

asked Jul 27, 2019 by anonymous

State and justify which of the following two transformers is better: Transformer A = 4% voltage regulation Transformer B = 6% voltage regulation

Last answer: Transformer A with 4% voltage regulation is better. Justification: Voltage regulation refers to the percentage change in secondary voltage when load is changed from no-load to full-load with primary voltage ... 4% voltage regulation, which is less as compared to 6% of transformer B, it is better.

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102 views 1 answer

asked May 15, 2018 by anonymous

A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary

A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is? A.0.2 B.0.4 C.5 D.25

Last answer: A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is? A.0.2 B.0.4 C.5 D.25

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195 views 1 answer

asked May 15, 2018 by anonymous

If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding,

If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ohms? A.250 ohms B.25 ohms C.6,250 ohms D.62,500 ohms

Last answer: 6,250 ohms

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313 views 2 answers

asked Mar 19, 2018 by anonymous

Atmospheric temperature during day and night is taken care of by which part of the transformer?

The changes in the volume of transformer cooling oil due to the variation of atmospheric temperature during day and night is taken care of by which part of the transformer?

Last answer: The changes in the volume of transformer cooling oil due to the variation of atmospheric temperature during day and night is taken care of by conservator.

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45 views 1 answer

asked Mar 19, 2018 by anonymous

Part of the transformer which is most subject to damage from overheating is?

Last answer: Part of the transformer which is most subject to damage from overheating is winding insulation.

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74 views 1 answer

asked May 20, 2018 by anonymous

A single-phase transformer has a turns ratio of 1 :2 and is connected to a purely resistive load as shown in the

Last answer: A single-phase transformer has a turns ratio of 1 :2 and is connected to a purely resistive load as shown in the figure. The magnetizing current drawn is 1A, and the secondary current is 1A. Ifcore losses and leakage reactances are neglected, the primary current is 2.24A

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184 views 1 answer

asked Mar 19, 2018 by anonymous

The purpose of providing an iron core in a transformer is to?

Last answer: The purpose of providing an iron core in a transformer is to decrease the reluctance of the magnetic path.

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83 views 1 answer

asked Mar 19, 2018 by anonymous

The no load current in a transformer lags behind the applied voltage by an angle of about?

Last answer: The no load current in a transformer lags behind the applied voltage by an angle of about 75°.

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79 views 1 answer

asked Mar 19, 2018 by anonymous

The purpose of providing iron core in a step-up transformer is?

Last answer: The purpose of providing iron core in a step-up transformer is to decrease the magnitude of magnetizing current.

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287 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.

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67 views 1 answer

asked Mar 19, 2018 by anonymous

The function of conservator in a transformer is?

Last answer: conservator or a reservoir tank for insulating oil in transformer which used for balanced the onload oil level with help of oil level indicator which mount on middle part of reservoir tank.

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asked Mar 19, 2018 by anonymous

The main reason for generation of harmonics in a transformer could be?

Last answer: The main reason for generation of harmonics in a transformer could be saturation of core.

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71 views 1 answer

asked Mar 19, 2018 by anonymous

The value of flux involved in the e.m.f. equation of a transformer is ?

Last answer: The value of flux involved in the e.m.f. equation of a transformer is maximum value.

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130 views 1 answer

asked Mar 19, 2018 by anonymous

The function of breather in a transformer is?

Last answer: The function of breather in a transformer is to arrest flow of moisture when outside air enters the transformer.

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110 views 1 answer

asked Mar 19, 2018 by anonymous

In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?

Last answer: In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of less than 15A.

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91 views 1 answer

asked Mar 19, 2018 by anonymous

The path of magnetic flux in a transformer should have?

Last answer: The path of magnetic flux in a transformer should have low reluctance.

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274 views 1 answer

asked Mar 19, 2018 by anonymous

No-load current in a transformer?

Last answer: No-load current in a transformer lags behind the voltage by about 75°.

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61 views 1 answer

asked Mar 19, 2018 by anonymous

In a transformer routine efficiency depends upon?

Last answer: In a transformer, routine efficiency depends upon load current and power factor of load.

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90 views 1 answer

asked Mar 19, 2018 by anonymous

In a transformer the tappings are generally provided on?

Last answer: In a transformer, the tappings are generally provided on low voltage side.

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53 views 1 answer

asked Mar 19, 2018 by anonymous

The leakage flux in a transformer depends upon?

Last answer: The leakage flux in a transformer depends upon load current.

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105 views 1 answer

asked Mar 19, 2018 by anonymous

Noise level test in a transformer is a?

Last answer: Noise level test in a transformer is a type test.

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70 views 1 answer

asked Mar 19, 2018 by anonymous

In a transformer the resistance between its primary and secondary should be?

Last answer: In a transformer the resistance between its primary and secondary should be infinity.

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101 views 1 answer

asked Mar 19, 2018 by anonymous

If a transformer is continuously operated the maximum temperature rise will occur in?

Last answer: If a transformer is continuously operated the maximum temperature rise will occur in windings.

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56 views 1 answer

asked Mar 19, 2018 by anonymous

The hum in a transformer is mainly attributed to?

Last answer: The hum in a transformer is mainly attributed to magnetostriction.

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86 views 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.

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132 views 1 answer

asked Mar 31, 2018 by anonymous

For a 100% efficient transformer, the primary winding has 1000 turns ...

For a 100% efficient transformer, the primary winding has 1000 turns and the secondary 100 turns. If the power input to the above transformer is 1000 watts, the power output is_________.

Last answer: For a 100% efficient transformer, the primary winding has 1000 turns and the secondary 100 turns. If the power input to the above transformer is 1000 watts, the power output is 1000 watts.

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102 views 1 answer

asked Mar 19, 2018 by anonymous

The use of higher flux density in the transformer design?

Last answer: The use of higher flux density in the transformer design reduces weight per kVA.

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88 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.

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95 views 1 answer

asked Mar 19, 2018 by anonymous

The transformer ratings are usually expressed in terms of?

Last answer: The transformer ratings are usually expressed in terms of kVA.

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212 views 1 answer

asked Mar 19, 2018 by anonymous

Transformer breaths in when?

Last answer: Transformer breaths in when load on it decreases.

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67 views 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 .

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49 views 1 answer

anonymous · Answer 1 · 2018-03-19T21:52:37+0000

answered Mar 19, 2018 by anonymous

High voltage winding in a transformer has more number of turns.

Which winding in a transformer has more number of turns ?

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