The line voltage EL in a star connection is equal to.... (Ep = phase voltage)

The line voltage EL in a star connection is equal to.... (Ep = phase voltage)
by

1 Answer

Answer :

The line voltage EL in a star connection is equal to √3 .Ep (Ep = phase voltage)

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Related questions

Write the relation between phase and line current, phase and line voltage for Star connection.

Description : Write the relation between phase and line current, phase and line voltage for Star connection.

Last Answer : Line voltage is equal to root three times of phase voltage and line and phase currents are equal in star connection

If 450 volts AC were measured across the load as shown in the illustration it would indicate a/an _______________. EL-0083 A. open winding between 'H1' and 'X1' B. properly operating circuit C. open winding between 'X1' and 'X4' D. ground on one side of 'Ep'

Description : If 450 volts AC were measured across the load as shown in the illustration it would indicate a/an _______________. EL-0083 A. open winding between 'H1' and 'X1' B. properly operating circuit C. open winding between 'X1' and 'X4' D. ground on one side of 'Ep'

Last Answer : Answer: C

In the illustrated three phase alternator, line voltage is _________. EL-0074 A. 1.73 times the phase voltage B. equal to the phase voltage C. phase voltage divided by 1.73 D. unable to answer this question without knowing the line current

Description : In the illustrated three phase alternator, line voltage is _________. EL-0074 A. 1.73 times the phase voltage B. equal to the phase voltage C. phase voltage divided by 1.73 D. unable to answer this question without knowing the line current

Last Answer : Answer: A

for Delta-Star connection of 3-phase transformer: i) Draw the connection diagram ii) List any two advantages of this connection iii) State its area of application.

Description : for Delta-Star connection of 3-phase transformer: i) Draw the connection diagram ii) List any two advantages of this connection iii) State its area of application. 

Last Answer : Disadvantages: i) In this type of connection, the secondary voltage is not in phase with the primary. Hence it is not possible to operate this connection in parallel with star-star or delta-delta ... iv) As line current is equal to phase current the conductor size of winding should be large. 

Which of the following statements about a three-phase wye connection is correct? A. The line current is 1.73 times the phase current. B. The phase current is 1.73 times the line current. C. The line voltage is 1.73 times the phase voltage. D. The phase voltage is 1.73 times the line voltage.

Description : Which of the following statements about a three-phase wye connection is correct? A. The line current is 1.73 times the phase current. B. The phase current is 1.73 times the line current. C. The line voltage is 1.73 times the phase voltage. D. The phase voltage is 1.73 times the line voltage.

Last Answer : Answer: C

A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input

Description : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is :

Last Answer : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is : 200 V

The circuit illustrated represents a single phase AC ground detecting system. If a ground occurs on line 'B', which of the lamps will burn the brightest? EL-0008 A. X B. Y C. Both will be equal brightness. D. both will go out.

Description : The circuit illustrated represents a single phase AC ground detecting system. If a ground occurs on line 'B', which of the lamps will burn the brightest? EL-0008 A. X B. Y C. Both will be equal brightness. D. both will go out.

Last Answer : Answer: A

For the illustrated wiring of a three phase alternator, which statement is true about the current? EL-0074 A. phase current is 1.73 times the line current B. line current is 1.73 times the phase current C. there is no relationship between phase current and line current D. line current is equal to phase current

Description : For the illustrated wiring of a three phase alternator, which statement is true about the current? EL-0074 A. phase current is 1.73 times the line current B. line current is 1.73 times the ... . there is no relationship between phase current and line current D. line current is equal to phase current

Last Answer : Answer: D

State the voltage and current relation in star and delta connection.

Description : State the voltage and current relation in star and delta connection. 

Last Answer : In star connection line current is equal to the phase current and line voltage is √3 times that of phase voltage. In delta connection line voltage is equal to the phase voltage and line current is √3 times that of phase current. 

What are the value of voltage and current in star connection and in delta connection?

Description : What are the value of voltage and current in star connection and in delta connection?

Last Answer : Star connection a. IL = IPh. b. VL = √3 VPh. ∴ VPh = VL/√3. Note: in star connection we are getting neutral point and we can able to measure the phase as well as line voltage. Delta connection a. VL = VPh. b. IL = √3 IPh. ∴ IPh = IL/√3.

In the illustrated circuit, what is the phase relationship of the amplifier output compared to the input? EL-0022 A. 0° in-phase B. 180° out of phase C. phase angle of the input divided by power factor D. unable to determine without the value of the bias voltage

Description : In the illustrated circuit, what is the phase relationship of the amplifier output compared to the input? EL-0022 A. 0° in-phase B. 180° out of phase C. phase angle of the input divided by power factor D. unable to determine without the value of the bias voltage

Last Answer : Answer: B

Erratic operation of the devices represented in the diagrams shown in the illustration could be traced to ____________. EL-0092 A. improper contact at 'R' slip rings or 'S' connections B. a low three-phase voltage supply C. improper contact at 'S' slip rings or 'R' connections D. a high three-phase voltage supply

Description : Erratic operation of the devices represented in the diagrams shown in the illustration could be traced to ____________. EL-0092 A. improper contact at 'R' slip rings or 'S' connections B. a low three- ... . improper contact at 'S' slip rings or 'R' connections D. a high three-phase voltage supply

Last Answer : Answer: A

Figure 'D' of the diagram shown in the illustration has a turns ratio of four to one. If a three-phase 440 volt supply is connected to terminals 'A-B-C', what voltage should develop across terminals 'a-b-c'? EL-0084 A. 64 volts B. 110 volts C. 190 volts D. 762 volts

Description : Figure 'D' of the diagram shown in the illustration has a turns ratio of four to one. If a three-phase 440 volt supply is connected to terminals 'A-B-C', what voltage should develop across terminals 'a-b-c'? EL-0084 A. 64 volts B. 110 volts C. 190 volts D. 762 volts

Last Answer : Answer: A

Figure 'C' of the diagram shown in the illustration has a turns ratio of four to one. If a three-phase 440 volt supply is connected to terminals 'A-B-C', what voltage should develop across terminals 'a-b-c'? EL-0084 A. 64 volts B. 110 volts C. 190 volts D. 762 volts

Description : Figure 'C' of the diagram shown in the illustration has a turns ratio of four to one. If a three-phase 440 volt supply is connected to terminals 'A-B-C', what voltage should develop across terminals 'a-b-c'? EL-0084 A. 64 volts B. 110 volts C. 190 volts D. 762 volts

Last Answer : Answer: C

Figure 'B' of the diagram shown in the illustration has a turns ratio of four to one. If a three-phase 440 volt supply is connected to terminals 'A-B-C', what voltage should develop across terminals 'a-b-c'? EL-0084 A. 64 volts B. 110 volts C. 190 volts D. 762 volts

Description : Figure 'B' of the diagram shown in the illustration has a turns ratio of four to one. If a three-phase 440 volt supply is connected to terminals 'A-B-C', what voltage should develop across terminals 'a-b-c'? EL-0084 A. 64 volts B. 110 volts C. 190 volts D. 762 volts

Last Answer : Answer: B

Figure 'A' of the diagram shown in the illustration has a turns ratio of four to one. If a three-phase 440 volt supply is connected to terminals 'A-B-C', what voltage should develop across terminals 'a-b-c'? EL-0084 A. 64 volts B. 110 volts C. 190 volts D. 762 volts

Description : Figure 'A' of the diagram shown in the illustration has a turns ratio of four to one. If a three-phase 440 volt supply is connected to terminals 'A-B-C', what voltage should develop across terminals 'a-b-c'? EL-0084 A. 64 volts B. 110 volts C. 190 volts D. 762 volts

Last Answer : Answer: B

Is it possible to escape this room? (ep. 4)

Description : Is it possible to escape this room? (ep. 4)

Last Answer : Take a bazooka and create a whole on the wall.

Which of the following statement is false? a.The potential energy of a particle has the form Ep = k2x. The force acting on the particle is constant (k is a constant) b.The linear velocity of bodies near the earth's equator (due to rotation of earth) is more than the velocities of particles at the pole c.107 dynes d.A cyclist should move along a zig-zag path while ascending a steep hill e.The density of milk decreases when cream is taken out of milk

Description : Which of the following statement is false? a.The potential energy of a particle has the form Ep = k2x. The force acting on the particle is constant (k is a constant) b.The linear velocity of ... zag path while ascending a steep hill e.The density of milk decreases when cream is taken out of milk

Last Answer : e. The density of milk decreases when cream is taken out of milk

What ep does sailor moon meet seiya?

Description : What ep does sailor moon meet seiya?

Last Answer : Need answer

What is my Kimball Elka EP 8 organ worth?

Description : What is my Kimball Elka EP 8 organ worth?

Last Answer : Need answer

What is my kimball elka ep-8 organ?

Description : What is my kimball elka ep-8 organ?

Last Answer : Need answer

EP-24 what is the best way to avoid running aground?

Description : EP-24 what is the best way to avoid running aground?

Last Answer : Looking at a nautical chart

EP-21 what is a requirement for fire extinguisher on a boat?

Description : EP-21 what is a requirement for fire extinguisher on a boat?

Last Answer : Must be coast guard approved

EP is always less than zero in

Description : EP is always less than zero in

Last Answer : Ans. Irrational zone (Stage – III)

When MP = AP, then EP = 1

Description : When MP = AP, then EP = 1

Last Answer : Ans. Unit inelastic demand

When MP > AP then EP> 1 is called

Description : When MP > AP then EP> 1 is called

Last Answer : Ans. Elastic demand

When MP = 0, then EP = 0 is called

Description : When MP = 0, then EP = 0 is called

Last Answer : Ans. Completely inelastic demand

Extreme Pressure (EP) additives cause ______ wear in the bearing parts. (a) abrasive (b) corrosive (c) pitting (d) fatigue

Description : Extreme Pressure (EP) additives cause ______ wear in the bearing parts. (a) abrasive (b) corrosive (c) pitting (d) fatigue

Last Answer : (b) corrosive

Vacuum tubes are designed to operate in what portion of the Ep - Ip

Description : Vacuum tubes are designed to operate in what portion of the Ep - Ip

Last Answer : The linear portion.

Botanical Words Alphabetical List - EP

Description : Botanical Words Alphabetical List - EP

Last Answer : EPAPPOSE: Having no tuft of bristles, a feature often found on seeds that are scattered by the wind, such as the seeds of a dandelion. EPICALYX: A calyx-like involucre of bracts below the true ... no bloom or powdery coating upon the surface of the leaf, stem or other plant part; not pruinose.

What type of tissue is bone tissue? a) muscle b) nervous c) epithelial (pron: ep-a-THEE-lee-al) d) connective

Description : What type of tissue is bone tissue? a) muscle b) nervous c) epithelial (pron: ep-a-THEE-lee-al) d) connective

Last Answer : ANSWER: D -- CONNECTIVE

Squamous cell tissue is an example of which type of tissue? a) muscle b) nervous c) epithelial (pron: ep-a-THEE-lee-al) d) connective

Description : Squamous cell tissue is an example of which type of tissue? a) muscle b) nervous c) epithelial (pron: ep-a-THEE-lee-al) d) connective

Last Answer : ANSWER: C -- EPITHELIAL

Which of the following is an example of striated tissue? a) muscle b) nervous c) epithelial (pron: ep-a-THEE-lee-al) d) connective

Description : Which of the following is an example of striated tissue? a) muscle b) nervous c) epithelial (pron: ep-a-THEE-lee-al) d) connective

Last Answer : ANSWER: A -- MUSCLE

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.

One important difference between wye-connected and delta-connected generators is that delta connections have ____________. A. line voltages equal to the vector sum of the phase voltages B. phase voltages 90° out of sync C. line current equal to the phase current D. line voltage equal to the phase voltage

Description : One important difference between wye-connected and delta-connected generators is that delta connections have ____________. A. line voltages equal to the vector sum of the phase voltages B. phase voltages 90° ... C. line current equal to the phase current D. line voltage equal to the phase voltage

Last Answer : Answer: D

In a three phase transformer, if the primary side is connected in star and secondary side is connected in delta, what is the angle difference between phase voltage in the two cases. (A) delta side lags by -30°. (B) star side lags by -30°. (C) delta side leads by 30°. (D) star side leads by -30°.

Description : In a three phase transformer, if the primary side is connected in star and secondary side is connected in delta, what is the angle difference between phase voltage in the two cases. (A) delta side lags by -30°. (B) star side lags by -30°. (C) delta side leads by 30°. (D) star side leads by -30°.

Last Answer : Ans: C This is vector group and has +30° displacement. Therefore, delta side leads by +30°.

A three phase induction motor is driving full -load torque which is independent of speed. If the line voltage...

Description : A three phase induction motor is driving full -load torque which is independent of speed. If the line voltage drops to 90% of the rated value, % increase in motor copper losses  (a) 23% (b) -18% (c) 123% (d) None of these

Last Answer : A three phase induction motor is driving full -load torque which is independent of speed. If the line voltage drops to 90% of the rated value, % increase in motor copper losses (a) 23% (b) -18% (c) 123% (d) None of these

In a Y -connected circuit, between each line -voltage and the nearest phase - voltage, there is a phase -angle of:

Description : In a Y -connected circuit, between each line -voltage and the nearest phase - voltage, there is a phase -angle of: A. 0° B. 30° C. 60° D. 120°

Last Answer : B

As shown in the illustration, if 'R1' and 'R2' have unequal values, the ____________. EL-0019 A. voltage drop across 'R1' will not be equal to the voltage drop across 'R2' B. current flow through 'R1' will equal the current flow through 'R2' C. the energy dissipated in 'R1' will be the same as the energy dissipated in 'R2' D. current flow through 'R1' will differ from the current flow through 'R2'

Description : As shown in the illustration, if 'R1' and 'R2' have unequal values, the ____________. EL-0019 A. voltage drop across 'R1' will not be equal to the voltage drop across 'R2' B. current flow ... energy dissipated in 'R2' D. current flow through 'R1' will differ from the current flow through 'R2'

Last Answer : Answer: D

If the electricity represented by the wave form in 'B' were applied to the left side of the illustrated circuit, the output on the right side would be ____________. EL-0064 A. direct current with the top lead positive with repect to the lower lead B. direct current, half wave rectified with a ripple frequency of 60 hz C. direct current with the top lead negative with repect to the lower lead D. clipped to a value equal to the square root of 3 times the input voltage value

Description : If the electricity represented by the wave form in 'B' were applied to the left side of the illustrated circuit, the output on the right side would be ____________. EL-0064 A. direct current with the ... lower lead D. clipped to a value equal to the square root of 3 times the input voltage value

Last Answer : Answer: C

The illustrated circuit is a wheatstone bridge. If the meter 'G' reads 0 with the switch closed then ________. EL-0024 A. the current through R1 - R2 is equal to the current through R3 - Rx B. the voltage across b - d is equal to the voltage of E C. the resistance of Rx is equal to the resistance of R2 D. all the above are true

Description : The illustrated circuit is a wheatstone bridge. If the meter 'G' reads 0 with the switch closed then ________. EL-0024 A. the current through R1 - R2 is equal to the current through R3 - Rx B. the voltage ... of E C. the resistance of Rx is equal to the resistance of R2 D. all the above are true

Last Answer : Answer: A

Moving the rheostat handle shown in the illustration, that is used to control a DC generator, towards the 'raise' direction will increase the _____________. EL-0030 A. field resistance B. armature resistance C. armature speed D. line voltage

Description : Moving the rheostat handle shown in the illustration, that is used to control a DC generator, towards the 'raise' direction will increase the _____________. EL-0030 A. field resistance B. armature resistance C. armature speed D. line voltage

Last Answer : Answer: D

The ground detection system, shown in the illustration for a low-voltage, threephase system has a ground in line 'A'. Therefore, lamp 'A' will burn ____________. EL-0009 A. dimly or be out, and lamps 'B' and 'C' will burn brightly B. normally, and lamps 'B' and 'C' will burn dimly or be out C. brightly, and lamps 'B' and 'C' will burn dimly or be out D. brightly, and lamps 'B' and 'C' will burn normally

Description : The ground detection system, shown in the illustration for a low-voltage, threephase system has a ground in line 'A'. Therefore, lamp 'A' will burn ____________. EL-0009 A. dimly or be out, and lamps 'B' and ... and 'C' will burn dimly or be out D. brightly, and lamps 'B' and 'C' will burn normally

Last Answer : Answer: A

Which of the following actions must be carried out prior to closing the alternator circuit breaker according to the graph shown in the illustration? EL-0002 A. Increase the alternator voltage. B. Decrease the line voltage. C. Increase the line voltage. D. Decrease the line frequency.

Description : Which of the following actions must be carried out prior to closing the alternator circuit breaker according to the graph shown in the illustration? EL-0002 A. Increase the alternator voltage. B. Decrease the line voltage. C. Increase the line voltage. D. Decrease the line frequency.

Last Answer : Answer: A

If fuse #1 shown in the illustration is defective, a voltage tester connected across points 'C' and 'B' will ____________. EL-0062 A. show a reading of 55 volts B. show full line voltage across the fuse C. give positive indication that fuse #2 is good D. give positive indication that fuse #1 is defective

Description : If fuse #1 shown in the illustration is defective, a voltage tester connected across points 'C' and 'B' will ____________. EL-0062 A. show a reading of 55 volts B. show full line voltage ... C. give positive indication that fuse #2 is good D. give positive indication that fuse #1 is defective

Last Answer : Answer: D

In the illustrated motor controller, the motor fails to start. A voltmeter reading between 1 and 6 reads line voltage, while the voltmeter reading between 2 and 6 reads 0 VAC. The problem is __________. EL-0007 A. the control fuse is the wrong amperage not allowing full current to pass through B. the stop switch is open C. an open in the 'M' coil, 'Ma' contact/start switch or overload contacts D. fuse '10a' is blown

Description : In the illustrated motor controller, the motor fails to start. A voltmeter reading between 1 and 6 reads line voltage, while the voltmeter reading between 2 and 6 reads 0 VAC. The problem is __________. EL- ... in the 'M' coil, 'Ma' contact/start switch or overload contacts D. fuse '10a' is blown

Last Answer : Answer: B