The voltage transformation ratio of a transformer is equal to the ratio of?

The voltage transformation ratio of a transformer is equal to the ratio of?
by

1 Answer

Answer :

The voltage transformation ratio of a transformer is equal to the ratio of secondary induced e.m.f. to primary induced e.m.f.

by

Related questions

Define: 1) voltage ratio, 2) current ratio, 3) transformation ratio of transformer.

Description : Define: 1) voltage ratio, 2) current ratio, 3) transformation ratio of transformer.

Last Answer : 1) Voltage ratio: The voltages in primary and secondary winding is proportional to number of turns in primary and secondary respectively. So, the voltage ratio is same as transformation ratio. V2/V1 = N2 ... as transformation ratio of transformer. It is denoted by K. K = N2/N1

Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is?

Description : Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is?

Last Answer : Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to 1.

Use of auto-transformer is economical when the transformation ratio is?

Description : Use of auto-transformer is economical when the transformation ratio is?

Last Answer : Use of auto-transformer is economical when the transformation ratio is near unity.

What is transformation ratio?

Description : What is transformation ratio?

Last Answer : Transformation Ratio (k):- It is the ratio of secondary number of turns to primary number of turns. OR It is the ratio of secondary voltage to primary voltage. OR It is the ratio of primary current to secondary current. 

Source transformation Replace the circuit with voltage source in series with a single resistor

Description : Source transformation Replace the circuit with voltage source in series with a single resistor

Last Answer : Source transformation Replace the circuit with voltage source in series with a single resistor

Find power delivered by voltage source

Description : Find power delivered by voltage source

Last Answer : Find power delivered by voltage source

Voltage ratio

Description : Voltage ratio

Last Answer : Voltage ratio

A dc chopper is fed from a constant voltage mains the duty ratio of chopper is progressively increased while

Description : A dc chopper is fed from a constant voltage mains the duty ratio of chopper is progressively increased while the chopper feeds an RL load. The per unit current ripple would  (1) increase progressively  (2 ... 0.5 and then increase  (4) increase to a maximum value at α = 0.5 and then decrease

Last Answer : A dc chopper is fed from a constant voltage mains the duty ratio of chopper is progressively increased while the chopper feeds an RL load. The per unit current ripple would increase to a maximum value at α = 0.5 and then decrease

The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is?

Last Answer : The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is 0.5.

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

Description : 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.

A good voltage regulation of a transformer means?

Description : A good voltage regulation of a transformer means?

Last Answer : A good voltage regulation of a transformer means output voltage fluctuation from no load to full load is least.

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

Description : 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.

Wye Delta Transformation problems

Description : Wye Delta Transformation

Last Answer : Wye Delta Transformation 1 : https://youtu.be/mPKeczDWZCo Wye Delta Transformation 2 : https://youtu.be/k80VbHI-wwg Wye Delta Transformation 3 : https://youtu.be/6cnwj15uw5M Wye Delta Transformation ... 8 : https://youtu.be/knRb5UW1404 Wye Delta Transformation 9 : https://youtu.be/JBwHKBJ08WM

Step-down transformer converts high voltage and low current into:

Description : Step-down transformer converts high voltage and low current into:  (A) How voltage and high current (B) High voltage and low current (C) Low voltage and high current (D) None of the above

Last Answer : Step-down transformer converts high voltage and low current into: Low voltage and high current

The kVA rating of Three-phase transformer with Voltage = 200V and Current = 100A will be :

Description : The kVA rating of Three-phase transformer with Voltage = 200V and Current = 100A will be :  (A) 34.64 kVA (B) 75 kVA (C) 20 kVA (D) None of the above

Last Answer : The kVA rating of Three-phase transformer with Voltage = 200V and Current = 100A will be : 34.64 kVA

A transformer has negative voltage regulation when its load power factor is

Description : A transformer has negative voltage regulation when its load power factor is   (1) Zero (2) Unity (3) Leading (4) Lagging

Last Answer : 0

What is a capacitor voltage transformer?

Description : What is a capacitor voltage transformer? A) It is a transformer used in power systems to step up low voltage signals and provide extra high voltage B) It is a transformer used in power systems ... in power systems to step down extra high voltage signals and provide low voltage D) None of these

Last Answer : What is a capacitor voltage transformer? A) It is a transformer used in power systems to step up low voltage signals and provide extra high voltage B) It is a transformer used in power systems ... power systems to step down extra high voltage signals and provide low voltage D) None of these

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.

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

Description : 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.

A transformer cannot raise or lower the voltage of a D.C. supply because?

Last Answer : A transformer cannot raise or lower the voltage of a D.C. supply because Faraday's laws of electromagnetic induction are not valid since the rate of change of flux is zero.

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°.

When a given transformer is run at its rated voltage but reduced frequency, its?

Last Answer : When a given transformer is run at its rated voltage but reduced frequency, its core flux density is increased.

The ratio of full -load volt-amperes to short-circuit volt-amperes is equal to :

Description : The ratio of full -load volt-amperes to short-circuit volt-amperes is equal to :

Last Answer : The ratio of full -load volt-amperes to short-circuit volt-amperes is equal to : Z (p.u)

What is transformation ratio for step up, step down and isolation transformer?

Description : What is transformation ratio for step up, step down and isolation transformer?

Last Answer : K>1 for step up transformer K

Has any jelly here gone through est training?

Description : Has any jelly here gone through est training?

Last Answer : answer:I have an older female relative who was very into this for a while. I was too young to really remember, but this relative took my mom to a retreat and mom said it was very reminiscent of an Amway ... to help control their lives. I do not think, as a whole, it has stood the test of time.

What is voltage transformation ratio or turn ratio?

Description : What is voltage transformation ratio or turn ratio?

Last Answer : It is expressed as ratio of the primary and secondary voltages of transformer. or It is expressed as ratio of the primary and secondary turns of transformer. E1/ E2= T1/T2 = K

Negative voltage regulation is indicative that the load is?

Description : Negative voltage regulation is indicative that the load is?

Last Answer : Negative voltage regulation is indicative that the load is capacitive.

For given applied voltage, with the increase in frequency of the applied voltage?

Description : For given applied voltage, with the increase in frequency of the applied voltage?

Last Answer : For given applied voltage, with the increase in frequency of the applied voltage eddy current loss will remain unchanged.

Minimum voltage regulation occurs when the power factor of the load is?

Description : Minimum voltage regulation occurs when the power factor of the load is?

Last Answer : Minimum voltage regulation occurs when the power factor of the load is leading.

In otto cycle compression ratio is 8. Calculate air standard efficiency. Will it be grater than Carnot Cycle ? Justify your answer.

Description : In otto cycle compression ratio is 8. Calculate air standard efficiency. Will it be grater than Carnot Cycle ? Justify your answer. 

Last Answer : No, the Otto cycle efficiency 56.47% will always be lower than Carnot cycle efficiency. Justification: Carnot theorem states that keeping operating conditions same, Carnot engine is more efficient than any other engine. So, Otto cycle efficiency is lower than Carnot cycle efficiency. 

Graph indicating changes in pollutants level w.r.t air fuel ratio

Description : Graph indicating changes in pollutants level w.r.t air fuel ratio

Last Answer : Graph indicating changes in pollutants level w.r.t air fuel ratio

Compressor pressure ratio (CPR)

Description : Compressor pressure ratio (CPR)

Last Answer : Compressor pressure ratio (CPR), is the ratio of the air total pressure exiting the compressor to the air pressure entering the compressor. This number is always greater than 1.0.

SEER: Seasonal Energy Efficiency Ratio (SEER)

Description : SEER: Seasonal Energy Efficiency Ratio (SEER)

Last Answer : SEER: Seasonal Energy Efficiency Ratio (SEER), is most commonly used to measure the efficiency of a central air conditioner. The higher the SEER, the more efficient the system OR It is the ... the ratio of total capacity to the total KW energy usage at specific humidity and temperature condition.

Turns ratio formula

Description : Turns ratio

Last Answer : Turns ratio formula

Impedance ratio

Description : Impedance ratio

Last Answer : Impedance ratio

Current ratio

Description : Current ratio

Last Answer : Current ratio

The ratio of the width to the height of the picture frame is called as

Description : The ratio of the width to the height of the picture frame is called as A) Rastar B) Aspect Ratio C) Length Ratio D) Efficiency  

Last Answer : The ratio of the width to the height of the picture frame is called as Aspect Ratio

If the fault current is 6000 A, the relay plug setting is 150% and the CT ratio is 400/5, the plug

Description : If the fault current is 6000 A, the relay plug setting is 150% and the CT ratio is 400/5, the plug setting multiplier will be

Last Answer : If the fault current is 6000 A, the relay plug setting is 150% and the CT ratio is 400/5, the plug setting multiplier will be 10

Given a unity feedback system with G(s)=k/s (s+4), the value of k for damping ratio of 0.5 is

Description : Given a unity feedback system with G(s)=k/s (s+4), the value of k for damping ratio of 0.5 is

Last Answer : Given a unity feedback system with G(s)=k/s (s+4), the value of k for damping ratio of 0.5 is 16

If Poisson's ratio of a resistance wire strain gauge is 1.8, then neglecting piezo-resistive effects, its Gauge

Description : If Poisson's ratio of a resistance wire strain gauge is 1.8, then neglecting piezo-resistive effects, its Gauge factor is :  (A) 2.8 (B) 2.6 (C) 4.6 (D) 3.6

Last Answer : If Poisson's ratio of a resistance wire strain gauge is 1.8, then neglecting piezo-resistive effects, its Gauge factor is : 4.6

Specific energy consumption of an electric train is the ratio between

Description : Specific energy consumption of an electric train is the ratio between (A) Specific energy output at driving wheels and efficiency of the traction motor (B) Specific energy output at driving wheels ... (D) Specific energy output at driving wheels and efficiency of the (motor + transmission gear)

Last Answer : Specific energy consumption of an electric train is the ratio between Specific energy output at driving wheels and efficiency of the (motor + transmission gear)

Ratio of the rotor reactance X to the rotor resistance R for a two-phase servo motor

Description : Ratio of the rotor reactance X to the rotor resistance R for a two-phase servo motor (A) is equal to that of a normal induction motor (B) is less than that of a normal induction motor (C) ... than that of a normal induction motor (D) may be less or greater than that of a normal induction motor

Last Answer : C

The Eb/V ratio of a d.c. motor is an indication of its?

Description : The Eb/V ratio of a d.c. motor is an indication of its?

Last Answer : The Eb/V ratio of a d.c. motor is an indication of its efficiency.

The ratio of mass of proton to that of electron is nearly?

Description : The ratio of mass of proton to that of electron is nearly?

Last Answer : The ratio of mass of proton to that of electron is nearly 1840.

Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as?

Description : Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as?

Last Answer : Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 2 : 5.

The ratio of active power to apparent power is known as____ factor.

Description : The ratio of active power to apparent power is known as____ factor.

Last Answer : The ratio of active power to apparent power is known as power factor.

The form factor is the ratio of?

Last Answer : The form factor is the ratio of r.m.s. value to average value.

The ratio of limiting friction and normal reaction is known as?

Description : The ratio of limiting friction and normal reaction is known as?

Last Answer : The ratio of limiting friction and normal reaction is known as coefficient of friction.

The ratio of starting torque to full-load torque is least in case of?

Last Answer : The ratio of starting torque to full-load torque is least in case of shunt motors.

A synchronous machine with low value of short-circuit ratio has?

Last Answer : A synchronous machine with low value of short-circuit ratio has lower stability limit.