The potential transformers Nominal Ratio is defined as the ratio of:

The potential transformers Nominal Ratio is defined as the ratio of:
by

1 Answer

Answer :

The potential transformers Nominal Ratio is defined as the ratio of: rated primary winding voltage and rated secondary winding voltage

by

Related questions

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.

Which of the following company is associated with manufacture of high capacity transformers in India?

Description : Which of the following company is associated with manufacture of high capacity transformers in India? A) M/S National Thermal Power Corporation Limited B) M/S Bharat Heavy Electricals Limited C) M/S Heavy Engineering Corporation Limited D) M/S Electricity Authority of India

Last Answer : Which of the following company is associated with manufacture of high capacity transformers in India? A) M/S National Thermal Power Corporation Limited B) M/S Bharat Heavy Electricals Limited C) M/S Heavy Engineering Corporation Limited D) M/S Electricity Authority of India

Impulse testing of transformers is done to determine the ability of:

Description :  Impulse testing of transformers is done to determine the ability of: A) bushings to withstand vibrations B) insulation to withstand transient voltages C) windings to withstand voltage fluctuations D) all of the above

Last Answer :  Impulse testing of transformers is done to determine the ability of: insulation to withstand transient voltages

Instruments transformers are used on a.c. circuits for extending the range of

Description : Instruments transformers are used on a.c. circuits for extending the range of (a) ammeters (b) voltmeters (c) wattmeters (d) all of these 

Last Answer : is the load PF is 0.866 then the average PF of the VV bank is

Two transformers with identical voltage ratings are working in parallel to supply common load. The percentage

Description : Two transformers with identical voltage ratings are working in parallel to supply common load. The percentage impedance of one transformer is higher compared to that of other. The load sharing ... respective impedance (4) Depend on the resistance to leakage reactance ratio of each transformer

Last Answer : Two transformers with identical voltage ratings are working in parallel to supply common load. The percentage impedance of one transformer is higher compared to that of other. The load sharing between the two transformer will: Be inversely proportional of their respective impedance

Which of the following are constant losses in Transformers?

Description : Which of the following are constant losses in Transformers? (1) Winding losses (2) Core losses (3) Both Winding & core losses (4) None of these

Last Answer : Which of the following are constant losses in Transformers? (1) Winding losses (2) Core losses (3) Both Winding & core losses (4) None of these

Two transformers are to be operated in parallel such that they share load in proportion to their kVA ratings.

Description : Two transformers are to be operated in parallel such that they share load in proportion to their kVA ratings. The rating of the first transformer is 500 kVA ratings. The rating of the first transformer is 500 kVA and its pu ... its pu leakage impedance is  (A) 0.20 (B) 0.10 (C) 0.05 (D) 0.025

Last Answer : Two transformers are to be operated in parallel such that they share load in proportion to their kVA ratings. The rating of the first transformer is 500 kVA ratings. The rating of the first transformer is ... .05 pu. If the rating of second transformer is 250 kVA, its pu leakage impedance is 0.10

In transformers, which ofthe following statements is valid?

Description : In transformers, which ofthe following statements is valid?  A) In an open circuit test, copper losses are obtained while in short circuit test, core losses are obtained B) In an open circuit test, ... drawn at zero power factor D) In an open circuit test, current is drawn at low power factor

Last Answer : In transformers, which ofthe following statements is valid?  A) In an open circuit test, copper losses are obtained while in short circuit test, core losses are obtained B) In an open circuit test, ... drawn at zero power factor D) In an open circuit test, current is drawn at low power factor

Two transformers operating in parallel will share the load depending upon their

Description : Two transformers operating in parallel will share the load depending upon their

Last Answer : Two transformers operating in parallel will share the load depending upon their Per unit impedance

Natural oil cooling is used for transformers up to a rating of?

Last Answer : Natural oil cooling is used for transformers up to a rating of 3000 kVA.

If the percentage impedances of the two transformers working in parallel are different, then?

Description : If the percentage impedances of the two transformers working in parallel are different, then?

Last Answer : If the percentage impedances of the two transformers working in parallel are different, then parallel operation will still be possible, but the power factors at which the two transformers operate will be different from the power factor of the common load.

Distribution transformers are generally designed for maximum efficiency around?

Last Answer : Distribution transformers are generally designed for maximum efficiency around 50% load.

Star/star transformers work satisfactorily when?

Last Answer : Star/star transformers work satisfactorily when load is balanced .

Power transformers are generally designed to have maximum efficiency around?

Last Answer : Power transformers are generally designed to have maximum efficiency around near full-load.

Two transformers do not have equal percentage impedance. This is likely to result in?

Description : Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in?

Last Answer : Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in loading of the transformers not in proportion to their kVA ratings.

Short circuit test on transformers is conducted to determine?

Last Answer : Short circuit test on transformers is conducted to determine copper losses.

For the parallel operation of single phase transformers it is necessary that they should have?

Last Answer : Necessary conditions required to be satisfied in order to ensure successful parallel operation of single phase transformers:  1. Only transformers having the same phase displacement between primary and secondary ... . 7. The phase sequence must be followed strictly on HV and LV side connection.

Natural air cooling is generally restricted for transformers up to?

Last Answer : Natural air cooling is generally restricted for transformers up to 1.5 MVA .

Losses which occur in rotating electric machines and do not occur in transformers are?

Description : Losses which occur in rotating electric machines and do not occur in transformers are?

Last Answer : Friction losses windage losses 

The efficiency of two identical transformers under load conditions can be determined by?

Description : The efficiency of two identical transformers under load conditions can be determined by?

Last Answer : The efficiency of two identical transformers under load conditions can be determined by back-to-back test.

The efficiencies of transformers compared with that of electric motors of the same power are?

Description : The efficiencies of transformers compared with that of electric motors of the same power are?

Last Answer : Transformers have high efficiency than the same ratted motors

During the recessionary phase of a business cycle: A. The natural rate of unemployment will increase dramatically B. Potential national income will exceed actual national income C. Actual national income will exceed potential national income D. The real rate of interest will exceed the nominal rate of interest.

Description : During the recessionary phase of a business cycle: A. The natural rate of unemployment will increase dramatically B. Potential national income will exceed actual national income C. Actual national income ... national income D. The real rate of interest will exceed the nominal rate of interest.

Last Answer : B. Potential national income will exceed actual national income

During the recessionary phase of a business cycle: A. The natural rate of unemployment will increase dramatically B. Potential national income will exceed actual national income C. Actual national income will exceed potential national income D. The real rate of interest will exceed the nominal rate of interest.

Description : During the recessionary phase of a business cycle: A. The natural rate of unemployment will increase dramatically B. Potential national income will exceed actual national income C. Actual national income ... national income D. The real rate of interest will exceed the nominal rate of interest.

Last Answer : A. The natural rate of unemployment will increase dramatically

During the recessionary phase of a business cycle (a) The natural rate of unemployment will increase dramatically (b) Potential national income will exceed actual national income (c) Actual national income will exceed potential national income (d) The real rate of interest will exceed the nominal rate of interest.

Description : During the recessionary phase of a business cycle (a) The natural rate of unemployment will increase dramatically (b) Potential national income will exceed actual national income (c) Actual national income ... national income (d) The real rate of interest will exceed the nominal rate of interest.

Last Answer : (a) The natural rate of unemployment will increase dramatically  

In the illustrated electronic governor, the circuit card connected to the potential and current transformers is for ________. EL-0046 A. increasing the signal strength to the governor to maintain constant engine speed with increased load B. send a kilowatt signal to the metering circuit C. shutting down the prime mover in the event of reverse power to protect from motorization D. conditioning the load through the use of a magnetic amplifier current transformer

Description : In the illustrated electronic governor, the circuit card connected to the potential and current transformers is for ________. EL-0046 A. increasing the signal strength to the governor to ... from motorization D. conditioning the load through the use of a magnetic amplifier current transformer

Last Answer : Answer: A

In potential transformers, the secondary turns are increased slightly and the primary and secondary windings...

Description : In potential transformers, the secondary turns are increased slightly and the primary and secondary windings are wound as closely as possible to compensate for  (a) Phase angle and ratio error, ... loss and hysteresis loss, respectively  (d) The hysteresis loss and eddy current loss, respectively

Last Answer : In potential transformers, the secondary turns are increased slightly and the primary and secondary windings are wound as closely as possible to compensate for Ratio and phase angle error, respectively 

How do I interpret data from a given table with frequency percent valid percent cumulative percent Each one has different levels of measurement such as nominal ordinal interval and ratio?

Description : How do I interpret data from a given table with frequency percent valid percent cumulative percent Each one has different levels of measurement such as nominal ordinal interval and ratio?

Last Answer : The answer depends on what the variables are and whether or notthere are any scientific or economic (or other) laws linking thevariables. A lot more basic information is required before you canstart interpreting data in any meaningful way.

How do I interpret data from a given table with frequency percent valid percent cumulative percent Each one has different levels of measurement such as nominal ordinal interval and ratio?

Description : How do I interpret data from a given table with frequency percent valid percent cumulative percent Each one has different levels of measurement such as nominal ordinal interval and ratio?

Last Answer : The answer depends on what the variables are and whether or notthere are any scientific or economic (or other) laws linking thevariables. A lot more basic information is required before you canstart interpreting data in any meaningful way.

Refer to the deviation of the operating frequency of a crystal oscillator from its nominal value due to temperature variations. A. Drift B. Flash over C. Frequency deviation D. Deviation ratio

Description : Refer to the deviation of the operating frequency of a crystal oscillator from its nominal value due to temperature variations. A. Drift B. Flash over C. Frequency deviation D. Deviation ratio

Last Answer : A. Drift

What is off nominal turns ratio?

Description : What is off nominal turns ratio?

Last Answer : When the voltage or turns ratio of a transformer is not used to decide the ratio of base KV then its voltage ratio is called off nominal turns ratio. Usually the voltage ratio of regulating transformer will be off nominal ratios.

Stress Concentration Factor is the ratio of nominal stress obtained by elementary equations for minimum cross- section and highest value of actual stress near discontinuity. a) True b) False

Description : Stress Concentration Factor is the ratio of nominal stress obtained by elementary equations for minimum cross- section and highest value of actual stress near discontinuity. a) True b) False

Last Answer : b) False

What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate? (A) 0.5 (B) 1 (C) 1.5 (D) 2

Description : What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate? (A) 0.5 (B) 1 (C) 1.5 (D) 2

Last Answer : (A) 0.5

The ratio of foreign rates to domestic rates measured in the 'same' currency is known as:a) Real exchange rateb) Nominal exchange ratec) Superfluous exchange rated) None of the above

Description : The ratio of foreign rates to domestic rates measured in the 'same' currency is known as: a) Real exchange rate b) Nominal exchange rate c) Superfluous exchange rate d) None of the above

Last Answer : a) Real exchange rate

Which of the following is the correct order of Stevens’ four levels of measurement? a. Ordinal, nominal, ratio, interval b. Nominal, ordinal, interval, ratio c. Interval, nominal, ordinal, ratio d. Ratio, interval, nominal, ordinal

Description : Which of the following is the correct order of Stevens’ four levels of measurement? a. Ordinal, nominal, ratio, interval b. Nominal, ordinal, interval, ratio c. Interval, nominal, ordinal, ratio d. Ratio, interval, nominal, ordinal

Last Answer : b. Nominal, ordinal, interval, ratio

Most of the outcome/dependent variable characteristics and attributes measured on educational characteristics probably exist at the ______________ level of measurement. a. Nominal b. Ordinal c. Interval d. Ratio

Description : Most of the outcome/dependent variable characteristics and attributes measured on educational characteristics probably exist at the ______________ level of measurement. a. Nominal b. Ordinal c. Interval d. Ratio

Last Answer : b. Ordinal

If a baseball coach calculates batting averages, what scale would be used? a. Interval scale b. Ratio scale c. Nominal scale d. Ordinal scale

Description : If a baseball coach calculates batting averages, what scale would be used? a. Interval scale b. Ratio scale c. Nominal scale d. Ordinal scale

Last Answer : b. Ratio scale

Which scale is the simplest form of measurement? a. Nominal b. Ordinal c. Interval d. Ratio

Description : Which scale is the simplest form of measurement? a. Nominal b. Ordinal c. Interval d. Ratio

Last Answer : nominal

A study in which we see the nurse’s level of education is classified in which level of measurement? a. Nominal-scale b. Ordinal scale c. Interval scale d. Ratio-scale

Description : A study in which we see the nurse’s level of education is classified in which level of measurement? a. Nominal-scale b. Ordinal scale c. Interval scale d. Ratio-scale

Last Answer : b. Ordinal scale

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

Description : 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 ... reactances are neglected, the primary current is  A)1.41A B)2A C) 2.24A D)3A

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

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

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

Last 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.

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.

Two transformers of identical voltages but different capacities are operated in parallel, for satisfactory load sharing: a) Impedances should be equal b) Per unit impedance must be equal c) per unit impedance and X/R ratio must be equal d) Impedance and X/R ratio must be equal

Description : Two transformers of identical voltages but different capacities are operated in parallel, for satisfactory load sharing: a) Impedances should be equal b) Per unit impedance must be equal c) per unit impedance and X/R ratio must be equal d) Impedance and X/R ratio must be equal

Last Answer : Ans: C

Advertising, as defined in the Code of Ethics, means a. The communication to the public of facts about a professional accountant which are not designed for the deliberate promotion of that professional accountant. b. The approach to a potential client for the purpose of offering professional services. c. The communication to the public of information as to the services or skills provided by professional accountants in public practice with a view to procuring professional business. d. Any of the given choices

Description : Advertising, as defined in the Code of Ethics, means a. The communication to the public of facts about a professional accountant which are not designed for the deliberate promotion of that professional ... in public practice with a view to procuring professional business. d. Any of the given choices

Last Answer : The communication to the public of information as to the services or skills provided by professional accountants in public practice with a view to procuring professional business

Given the potential V = 25 sin θ, in free space, determine whether V satisfies Laplace’s equation. a) Yes b) No c) Data sufficient d) Potential is not defined

Description : Given the potential V = 25 sin θ, in free space, determine whether V satisfies Laplace’s equation. a) Yes b) No c) Data sufficient d) Potential is not defined

Last Answer : a) Yes

Capstone’s definition of reach in the marketing module is defined by the potential number of customers who would see the message. Based on this definition what segment has “fair” reach with direct mailing? a. High End b. Traditional c. Low End d. Performance e. Size

Description : Capstone’s definition of reach in the marketing module is defined by the potential number of customers who would see the message. Based on this definition what segment has “fair” reach with direct mailing? a. High End b. Traditional c. Low End d. Performance e. Size

Last Answer : a. High End

What is defined as the sum of the system’s internal energy and the product of its pressure and volume? a. Entropy. b. Enthalpy. c. Free energy. d. Potential energy.

Description : What is defined as the sum of the system’s internal energy and the product of its pressure and volume? a. Entropy. b. Enthalpy. c. Free energy. d. Potential energy.

Last Answer : b. Enthalpy.

In which stage are conflict issues defined? (a) Stage I, Potential opposition ; (b) Stage II, Cognition and personalization (c) Stage III, Intuitions ; (d) Stage IV, Behavior

Description : In which stage are conflict issues defined? (a) Stage I, Potential opposition ; (b) Stage II, Cognition and personalization (c) Stage III, Intuitions ; (d) Stage IV, Behavior

Last Answer : (b) Stage II, Cognition and personalization

Statistics: How to determine correlations between nominal variables?

Description : Statistics: How to determine correlations between nominal variables?

Last Answer : answer:It sounds like there are actually four variables (A, B, X, and Y). A Chi square might help to set things up. Imagine four boxes two on top of two. Across the top it says ... things being equal, you would NOT expect that Approach X will be any different than Approach Y for construction A.