Non -loading heat run test on transformers is performed by means of

Non -loading heat run test on transformers is performed by means of
by

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Answer :

Non -loading heat run test on transformers is performed by means of Sumpner's test

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D. Loading of the transformers not i76 The changes in volume of transformer cooling oil due to variation of atmospeheric temperature during day and night is taken care of by which part of transformer? A. Conservator B. Breather C. Bushings D. Buchholz relay

Description : 76 The changes in volume of transformer cooling oil due to variation of atmospeheric temperature during day and night is taken care of by which part of transformer? A. Conservator B. Breather C. Bushings D. Buchholz relay

Last Answer : A. Conservator

[75] Two transformers are connected in parallel. These transformers do not have equal percentage impedance which results A. Short-circuiting of the secondaries B. Power factor of one of the transformers is leading while that of the other lagging C. Transformers having higher copper losses will have negligible core losses D. Loading of the transformers not in proportion to their kVA ratings.

Description : [75] Two transformers are connected in parallel. These transformers do not have equal percentage impedance which results A. Short-circuiting of the secondaries B. Power factor of one of the ... have negligible core losses D. Loading of the transformers not in proportion to their kVA ratings.

Last Answer : D. Loading of the transformers not in proportion to their kVA ratings

Acceptance testing means A. Testing performed on a single stand – alone module or unit of code B. Testing after changes have been made to ensure that no unwanted changes were introduced C. Testing to ensure that the system meets the needs of the organization and end user. D. Users test the application in the developers environment

Description : Acceptance testing means A. Testing performed on a single stand - alone module or unit of code B. Testing after changes have been made to ensure that no unwanted changes were introduced C. ... the needs of the organization and end user. D. Users test the application in the developers environment

Last Answer : C. Testing to ensure that the system meets the needs of the organization and end user.

A triaxial shear test is preferred to direct shear test, because (A) It can be performed under all three drainage conditions with complete control (B) Precise measurement of pore pressure and change in volume during test, is not possible (C) Stress distribution on the failure plane, is non uniform (D) None of these

Description : A triaxial shear test is preferred to direct shear test, because (A) It can be performed under all three drainage conditions with complete control (B) Precise measurement of pore pressure and change in ... possible (C) Stress distribution on the failure plane, is non uniform (D) None of these

Last Answer : Answer: Option A

What operational characteristics do the components labeled as 'S' and 'R' represent in the motor controller diagram shown in the illustration? EL-0080 A. Standard and Reverse directions B. Stop and Restart features C. Subnormal and Regular loading D. Start and Run functions

Description : What operational characteristics do the components labeled as 'S' and 'R' represent in the motor controller diagram shown in the illustration? EL-0080 A. Standard and Reverse directions B. Stop and Restart features C. Subnormal and Regular loading D. Start and Run functions

Last Answer : Answer: D

__________ means sharing a program with someone who is not authorized by the license agreement to use it. A. Softloading B. Hard Disk loading C. Internet Downloading D. Renting

Description : __________ means sharing a program with someone who is not authorized by the license agreement to use it. A. Softloading B. Hard Disk loading C. Internet Downloading D. Renting

Last Answer : D. All of the above

Which of the following concepts means adding new concepts to a program as it runs? (A) Data hiding (B) Dynamic loading (C) Dynamic typing (D) Dynamic binding

Description : Which of the following concepts means adding new concepts to a program as it runs? (A) Data hiding (B) Dynamic loading (C) Dynamic typing (D) Dynamic binding

Last Answer : (B) Dynamic loading

“Booting the System” means (1) loading the operating system (2) dismissing the computer (3) running an application program called “Booting”. (4) physically kicking the computer

Description : “Booting the System” means (1) loading the operating system (2) dismissing the computer (3) running an application program called “Booting”. (4) physically kicking the computer

Last Answer : loading the operating system

The heat dissipating capability of transformers of ratings higher than 30 kVA in increased by providing which of the following ? (a) Corrugations (b) Fins (c) Tubes (d) Radiator tanks (e) All of the above

Description : The heat dissipating capability of transformers of ratings higher than 30 kVA in increased by providing which of the following ? (a) Corrugations (b) Fins (c) Tubes (d) Radiator tanks (e) All of the above

Last Answer : (e) All of the above

If all three ground-detection lamps continue to burn at equal intensity after the test button is depressed and released, which of the listed conditions is indicated? A. No grounds exist B. All three phases are grounded C. The test switch is faulty D. The current transformers are shorted out

Description : If all three ground-detection lamps continue to burn at equal intensity after the test button is depressed and released, which of the listed conditions is indicated? A. No grounds exist B. All three phases are grounded C. The test switch is faulty D. The current transformers are shorted out

Last Answer : Answer: A

On a switchboard, if all three ground detection lamps remain burning at half intensity when the test button is depressed, which of the listed conditions is indicated? A. No grounds exist. B. All three phases are grounded. C. The test switch is grounded. D. The current transformers are shorted.

Description : On a switchboard, if all three ground detection lamps remain burning at half intensity when the test button is depressed, which of the listed conditions is indicated? A. No grounds exist. B. All three phases are grounded. C. The test switch is grounded. D. The current transformers are shorted.

Last Answer : Answer: A

1 Sumpner's test is conducted on transformers to find A. Temperature B. Stray losses C. All-day efficiency D. None of the above

Description : 1 Sumpner's test is conducted on transformers to find A. Temperature B. Stray losses C. All-day efficiency D. None of the above

Last Answer : A. Temperature

Short circuit test on transformers is conducted to determine?

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

Styrene butadiene rubber (SBR) as compared to natural rubber has (A) Poor tensile strength (B) Poorer resistance (C) Greater amount of heat build up heavy loading (D) All (A), (B) and (C)

Description : Styrene butadiene rubber (SBR) as compared to natural rubber has (A) Poor tensile strength (B) Poorer resistance (C) Greater amount of heat build up heavy loading (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Styrene-butadiene-rubber (SBR) as compared to natural rubber has (A) Poorer tensile strength (B) Poorer resistance to oxidation (C) Greater amount of heat build-up under heavy loading (D) All (A), (B) and (C)

Description : Styrene-butadiene-rubber (SBR) as compared to natural rubber has (A) Poorer tensile strength (B) Poorer resistance to oxidation (C) Greater amount of heat build-up under heavy loading (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

A 1000 × 1000 bus admittance matrix for an electric power system has 8000 non-zero elements. The minimum number of branches (transmission lines and transformers) in this system are _____ (up to 2 decimal places)

Description : A 1000 × 1000 bus admittance matrix for an electric power system has 8000 non-zero elements. The minimum number of branches (transmission lines and transformers) in this system are _____ (up to 2 decimal places)

Last Answer : Ans: 3500.00

A 300 mm square bearing plate settles by 15 mm in a plate load test on a cohesive soil when the intensity of loading is 0.2 N/mm². The settlement of a prototype shallow footing 1 m square under the same intensity of loading is (A) 15 mm (B) 30 mm (C) 50 mm (D) 167 mm

Description : A 300 mm square bearing plate settles by 15 mm in a plate load test on a cohesive soil when the intensity of loading is 0.2 N/mm². The settlement of a prototype shallow footing 1 m square under the same intensity of loading is (A) 15 mm (B) 30 mm (C) 50 mm (D) 167 mm

Last Answer : (C) 50 mm

In the plate loading test for determining the bearing capacity of soil, the size of square bearing plate should be (A) Less than 300 mm (B) Between 300 mm and 750 mm (C) Between 750 mm and 1 m (D) Greater than 1 m

Description : In the plate loading test for determining the bearing capacity of soil, the size of square bearing plate should be (A) Less than 300 mm (B) Between 300 mm and 750 mm (C) Between 750 mm and 1 m (D) Greater than 1 m

Last Answer : (B) Between 300 mm and 750 mm

A 600 mm square bearing plate settles by 15 mm in plate load test on a cohesion-less soil under an intensity of loading of 0.2 N/ram². The settlement of a prototype shallow footing 1 m square under the same intensity of loading is (A) 15 mm (B) Between 15 mm and 25 mm (C) 25 mm (D) Greater than 25 mm

Description : A 600 mm square bearing plate settles by 15 mm in plate load test on a cohesion-less soil under an intensity of loading of 0.2 N/ram². The settlement of a prototype shallow footing 1 m square under the same intensity of ... (A) 15 mm (B) Between 15 mm and 25 mm (C) 25 mm (D) Greater than 25 mm

Last Answer : Answer: Option B

Draw the experimental setup of plate load test using gravity loading.

Description : Draw the experimental setup of plate load test using gravity loading.

Last Answer : Plate Load Test :- 1.Bearing Plate: - It is either circular or square made up mild steel of not less than 25mm thickness and varying in size from 300 to 750mm with grooved bottom. For clayey soil ... settlement curve is plotted where load intensity is on X axis and Settlement is on Y axis.

Explain direct loading test on single phase transformer with neat circuit diagram.

Description : Explain direct loading test on single phase transformer with neat circuit diagram. 

Last Answer : Direct loading test on single phase transformer with neat circuit diagram:   Direct loading test on transformer is carried out to calculate the losses, efficiency and voltage regulation of the ... voltage.  Efficiency and regulation can be calculated by using following formulae:   

Operational audits generally have been conducted by internal and COA auditors, but may be performed by certified public accountants. A primary purpose of an operational audit is to provide: a. A measure of management performance in meeting organizational goalsb. The results of internal examinations of financial and accounting matters to a company's top-level management. c. Aid to the independent-auditor, who is conducting the examination of the financial statements. d. A means of assurance that internal accounting controls are functioning as planned.

Description : Operational audits generally have been conducted by internal and COA auditors, but may be performed by certified public accountants. A primary purpose of an operational audit is to provide: ... statements. d. A means of assurance that internal accounting controls are functioning as planned

Last Answer : A measure of management performance in meeting organizational goals

What is "strategic control"? a) Control over the production process within an organization, in the sense of determining how the employees of an organization perform their work. b) The process by which one entity influences, to varying degrees, the behaviour and output of another entity through informal mechanisms. c) Control over the means and methods on which the whole conduct of an organization depends. d) Control over the production process within an organization, in the sense of determining how informal practices are performed.

Description : What is "strategic control"? a) Control over the production process within an organization, in the sense of determining how the employees of an organization perform their work. b) The ... production process within an organization, in the sense of determining how informal practices are performed.

Last Answer : Control over the means and methods on which the whole conduct of an organization depends.

Give any two advantages of star-star connection in 3-ф transformers.

Last Answer : Advantages of star-star connection in 3-ф transformers: 1. It is possible to use the transformer for 3-phase, four wire system because of neutral. 2. The phase shift between primary and ... times line voltage, the no.of turns required for primary and secondary are less, hence economical.

Classification of transformers

Description : Classification of transformers

Last Answer : Classification of transformers: Transformers are classified on the basis of core construction, frequency, and power. These are the three broad groups of transformers. a) Core construction ... Power transformers are used in conjunction with generators, 2. Distribution transformer

Distribution transformers have good all day efficiency due to

Description : Distribution transformers have good all day efficiency due to  (A) low copper loss (B) low iron loss (C) low copper and iron loss (D) None of these

Last Answer : Distribution transformers have good all day efficiency due to low iron loss

Which of the following connection of transformers will give highest value of secondary voltage ?

Description : Which of the following connection of transformers will give highest value of secondary voltage ? (A) Delta primary delta secondary (B) Delta primary star secondary (C) Star primary star secondary (D) Star primary delta secondary

Last Answer : Which of the following connection of transformers will give highest value of secondary voltage ? (A) Delta primary delta secondary (B) Delta primary star secondary (C) Star primary star secondary (D) Star primary delta secondary

Two transformers A and B having equal outputs and voltage ratios but unequal percentage

Description : Two transformers A and B having equal outputs and voltage ratios but unequal percentage impedances of 4 and 2 are operating in parallel. The transformer A will be overloaded by 

Last Answer : Two transformers A and B having equal outputs and voltage ratios but unequal percentage impedances of 4 and 2 are operating in parallel. The transformer A will be overloaded by 33%

Core type transformers are popular in___________.

Description : Core type transformers are popular in___________.  (A) High voltage applications (B) Low voltage applications (C) All of the above (D) None of the above

Last Answer : Core type transformers are popular in High voltage applications

The friction losses in Real Transformers are :

Description : The friction losses in Real Transformers are :  (A) 0% (B) 5% (C) 25% (D) 50%

Last Answer : A

Two 3-phase transformers cannot be operated in parallel, if their :

Description : Two 3-phase transformers cannot be operated in parallel, if their :  (A) kVAs are different (B) phase sequences are different (C) % impedances are different (D) voltage ratios are different

Last Answer : Two 3-phase transformers cannot be operated in parallel, if their : phase sequences are different

Which of the following is the advantage of using CRGO steel in transformers?

Description : Which of the following is the advantage of using CRGO steel in transformers? A) High magnetic flux density B) Low permeability C) Both A and B D) None of these

Last Answer : It definitely High Magnetic Flux Density since a crgo steel has always a more around 3% of silicon proportion among the remaining ferrite which make cold rolled grain oriented steel having high flux magnetic ... for more about the crgo core you can learn here https://nicoreindia.com/crgo-core/

Two transformers having the same p.u. impedance connected in parallel share the connected load

Description : Two transformers having the same p.u. impedance connected in parallel share the connected load (A) equally (B) in proportion to the respective ratings (C) in proportion to the voltage ratio (D) in proportion to the zero phase displacement

Last Answer : Two transformers having the same p.u. impedance connected in parallel share the connected load in proportion to the respective ratings

Consider the following statements regarding three-phase transformers in Open -Delta (V -V) connections

Description : Consider the following statements regarding three-phase transformers in Open -Delta (V -V) connections :  1. Being a temporary remedy when one transformer forms of Delta -Delta system is &imaged, and removed from service.  ... and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3

Last Answer : Consider the following statements regarding three-phase transformers in Open -Delta (V -V) connections :  1. Being a temporary remedy when one transformer forms of Delta -Delta system is &imaged, and removed from service.  ... and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3

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 

Regulating transformers are used in power systems for control of :

Description : Regulating transformers are used in power systems for control of : a) voltage b) power factor c) power flow d) all of the above

Last Answer : Regulating transformers are used in power systems for control of :  power flow 

Distribution transformers have core losses:

Description : Distribution transformers have core losses:  (1) More than full load copper losses (2) Equal to full load copper losses (3) Less than full load copper losses (4) W Negligible compared to full load copper losses

Last Answer : Distribution transformers have core losses:  Less than full load copper losses.

of what use are current and voltage transformers in protective systems

Last Answer : Current transformers (CT) : Current transformer (CT) actually step down the high current to low current for the operation of relays. Current transformer is use for measurement of ... use for relay. This is about potential transformer.

which type of oil is use in transformers ?

Description : which type of oil is use in transformers ?

Last Answer : Mineral oil is use in transformers .

With neat diagram explain calibration of energy meter by direct loading method.

Description : With neat diagram explain calibration of energy meter by direct loading method.

Last Answer : Calibration of Energy Meter by Direct Loading Method:  There are three methods for testing/calibration:  1. Long period dial test  2. Using rotary sub- standard meter  3. Using precision grade instruments  All ... of substandard meter in kWh  Then % error = [(D - DS)/DS] x 100

When the load on a transmission line is equal to the surge impedance loading

Description : When the load on a transmission line is equal to the surge impedance loading  (a) The receiving end voltage is less than the sending end voltage  (b) The sending end voltage is less than the ... is more than the sending end voltage  (d) The receiving end voltage equal to the sending end voltage 

Last Answer : When the load on a transmission line is equal to the surge impedance loading The receiving end voltage equal to the sending end voltage 

How often should you have residential duct cleaning performed in a 20 year old home with gas heat?

Description : How often should you have residential duct cleaning performed in a 20 year old home with gas heat?

Last Answer : My home is 20 years old and has gas heat. How often should I have residential duct cleaning performed as I haven't had my ducts cleaned at all?

Which of the following is not a function performed by muscle through contraction? a) motion b) maintenance of posture c) hemopoiesis d) heat production

Description : Which of the following is not a function performed by muscle through contraction? a) motion b) maintenance of posture c) hemopoiesis d) heat production

Last Answer : ANSWER: C -- HEMOPOIESIS

Carbylamine test is performed in alcoholic `KOH` by heating a mixture of:

Description : Carbylamine test is performed in alcoholic `KOH` by heating a mixture of:

Last Answer : Carbylamine test is performed in alcoholic `KOH` by heating a mixture of: A. chloroform and silver ... amine D. an alkyl cyanide and a primary amine

What test is performed to diagnose diabetes?

Description : What test is performed to diagnose diabetes?

Last Answer : To test for Diabetes a doctor will give you something very sweet to drink, then later blood is drawn and you get the results. vhttp://www.articlesbase.com/diseases-and-conditions-articles/diabetes-test-3131226.html#axzz1PcYT6pCI

What test can be performed to detect a leak after fueling a gasoline-powered?

Description : What test can be performed to detect a leak after fueling a gasoline-powered?

Last Answer : Sniff test

Salkowski test is performed to detect (A) Glycerol (B) Cholesterol (C) Fatty acids (D) Vitamin D

Description : Salkowski test is performed to detect (A) Glycerol (B) Cholesterol (C) Fatty acids (D) Vitamin D

Last Answer : Answer : B

True statements concerning hypoadrenal shock include which of the following? A. Adrenocortical insufficiency may manifest itself as severe shock refractory to volume and pressor therapy. B. The presence of hyperglycemia and hypotension may suggest the diagnosis of shock due to adrenocortical insufficiency. C. Hydrocortisone does not interfere with the serum cortisol assay and should be given to hemodynamically unstable patients suspected of having hypoadrenal shock. D. The rapid adrenocorticotropic hormone (ACTH) stimulation test should be performed to help establish the diagnosis of acute adrenocortical insufficiency.

Description : True statements concerning hypoadrenal shock include which of the following? A. Adrenocortical insufficiency may manifest itself as severe shock refractory to volume and pressor therapy. B. ... test should be performed to help establish the diagnosis of acute adrenocortical insufficiency.

Last Answer : Answer: AD DISCUSSION: Shock due to acute adrenocortical insufficiency is relatively uncommon but must be considered when shock refractory to volume replacement and pressor therapy is present. ... and it is the corticosteroid of choice while the ACTH stimulation test is being performed

Which of the following events occurred first? (1) DNA structure of genes was discovered by James D Watson and Francis Crick (2) Yuri Gagarin became the first man in space (3) World's first human heart transplant was performed by Dr. Christian Barnard (4) World's first test tube baby Louise Brown was born in U.K.

Description : Which of the following events occurred first? (1) DNA structure of genes was discovered by James D Watson and Francis Crick (2) Yuri Gagarin became the first man in space (3) World's first human heart ... by Dr. Christian Barnard (4) World's first test tube baby Louise Brown was born in U.K.

Last Answer : (1) DNA structure of genes was discovered by James D Watson and Francis Crick Explanation: Discovery of DNA structure of genes: 25 April, 1953; Yuri Gagarin's feat of becoming the first man in space: ... human heart transplant: 3 December, 1967; and World's first test tube baby: 25 July, 1978.