in open circuit or no load test of transformer which side is open circuited?

Last Answer : In short circuit test of transformer the low voltage side is short circuited . On high voltage side the voltmeter is connected in parallel and ammeter in series and also a wattmeter is ... circuit test is done for determining impedance and losses. In this test iron losses is neglected.

171 views 1 answer

asked Sep 3, 2017 by anonymous

A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is ...

A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is connected to the source. Maximum power dissipated in the load is (A) 300 W (B) 150 W (C) 45 W (D) 20 W
Last Answer : A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is connected to the source. Maximum power dissipated in the load is 150 W

297 views 1 answer

asked Apr 25, 2018 by anonymous

Describe the difference between an open circuit and a short circuit.

Describe the difference between an open circuit and a short circuit.
Last Answer : Open circuit means the wire is cut meaning power will not flow and close circuit means wire is not cut and hence power will flow.Short circuit is the same as close circuit

7.9k views 3 answers

asked Jun 29, 2019 by anonymous

It is required to measure the true open circuit e.m.f. of a battery. The best device is?

Last Answer : It is required to measure the true open circuit e.m.f. of a battery. The best device is D.C. potentiometer.

285 views 1 answer

asked Mar 21, 2018 by anonymous

Explain open emitter BJT drive circuit.

Explain open emitter BJT drive circuit.
Last Answer : open emitter BJT drive circuit:

262 views 1 answer

asked Feb 19, 2018 by anonymous

An open-circuit test on a transformer is conducted primarily to measure?

An open-circuit test on a transformer is conducted primarily to measure?
Last Answer : The open-circuit test in a transformer is used to measure

627 views 2 answers

asked Mar 19, 2018 by anonymous

A no-load test is performed on a transformer to determine?

A no-load test is performed on a transformer to determine?
Last Answer : A no-load test is performed on a transformer to determine magnetizing current and loss.

124 views 1 answer

asked Mar 19, 2018 by anonymous

Short circuit test on transformers is conducted to determine?

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

221 views 1 answer

asked Mar 19, 2018 by anonymous

Open circuited armature coil of a D.C. machine is?

Last Answer : Open circuited armature coil of a D.C. machine is identified by the scarring of the commutator segment to which open circuited coil is connected and indicated by a spark completely around the commutator.

162 views 1 answer

asked Mar 20, 2018 by anonymous

If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will?

Last Answer : If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will stop.

258 views 1 answer

asked Mar 20, 2018 by anonymous

Polarity Test of Transformer

Polarity Test of Transformer
Last Answer : Polarity Test of Transformer

313 views 1 answer

asked Apr 30, 2020 by anonymous

If a 5-bus test system contains 6 transmission lines and one transformer, how many non- zero elements are

If a 5-bus test system contains 6 transmission lines and one transformer, how many non-zero elements are there in the system Y-bus ? (A) 25 (B) 12 (C) 11 (D) 19
Last Answer : If a 5-bus test system contains 6 transmission lines and one transformer, 19 non-zero elements are there in the system Y-bus.

3.0k views 1 answer

asked Apr 28, 2018 by anonymous

Sumpner's test is conducted on transformer to determine?

Sumpner's test is conducted on transformer to determine?
Last Answer : Sumpner's test is conducted on transformer to determine temprature.

122 views 1 answer

asked Mar 19, 2018 by anonymous

66 While conducting short-circuit test on a transformer the following side is short circuited A. High voltage side B. low voltage side C. primary side D. secondary side

66 While conducting short-circuit test on a transformer the following side is short circuited A. High voltage side B. low voltage side C. primary side D. secondary side
Last Answer : B. Low voltage side

27 views 1 answer

asked Jul 21, 2021 by jyoti kurekar

30 In performing the short circuit test of a transformer A. high voltage is usually short circuited B. low voltage side is usually short circuited C. any side is short circuited with preference D. none of the above

30 In performing the short circuit test of a transformer A. high voltage is usually short circuited B. low voltage side is usually short circuited C. any side is short circuited with preference D. none of the above
Last Answer : B. Low voltage side is usually short circuited

12 views 1 answer

asked Jul 21, 2021 by jyoti kurekar

Equivalent circuit of transformer

Equivalent circuit of transformer
Last Answer : Equivalent Circuit Diagram of Transformer Referred to Primary: V1 -Primary Input voltage I1 - Input Current I0- Exciting current/ No load current Im- Magnetizing component ... equivalent of secondary terminal voltage ZL- Load impedance ZL ′- Primary equivalent of load impedance

389 views 2 answers

asked May 17, 2020 by anonymous

An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to

An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to secondary turn’s ratio 12:1. The peak inverse voltage is A) 8.62 V B) 12 V C) 19.17 V D) 27.11 V
Last Answer : An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to secondary turn’s ratio 12:1. The peak inverse voltage is A) 8.62 V B) 12 V C) 19.17 V D) 27.11 V

261 views 1 answer

asked Jun 18, 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.

175 views 1 answer

asked Mar 20, 2018 by anonymous

When secondary of a current transformer is open-circuited its iron core will be?

When secondary of a current transformer is open-circuited its iron core will be?
Last Answer : When secondary of a current transformer is open-circuited its iron core will be hot because of heavy iron losses taking place in it due to high flux density.

167 views 1 answer

asked Mar 19, 2018 by anonymous

During short circuit test iron losses are negligible because A. The current on secondary side is negligible B. The voltage on secondary side does not vary C. The voltage applied on primary side is low D. Full-load current is not supplied to the transformer

During short circuit test iron losses are negligible because A. The current on secondary side is negligible B. The voltage on secondary side does not vary C. The voltage applied on primary side is low D. Full-load current is not supplied to the transformer
Last Answer : C) the voltage applied on primary side is low

53 views 1 answer

asked Jul 19, 2021 by jyoti kurekar

During short circuit test iron losses are negligible because A. The current on secondary side is negligible B. The voltage on secondary side does not vary C. The voltage applied on primary side is low D. Full-load current is not supplied to the transformer

During short circuit test iron losses are negligible because A. The current on secondary side is negligible B. The voltage on secondary side does not vary C. The voltage applied on primary side is low D. Full-load current is not supplied to the transformer
Last Answer : C) the voltage applied on primary side is low

5 views 1 answer

asked Jul 18, 2021 by jyoti kurekar

7 The main advantage of auto transformer over a two winding transformer is A. Hysteresis losses are reduced B. Saving in winding material C. Copper losses are negligible D. Eddy losses are totally eliminated 8 During short circuit test iron losses are negligible because A. The current on secondary side is negligible B. The voltage on secondary side does not vary C. The voltage applied on primary side is low D. Full-load current is not supplied to the transformer

7 The main advantage of auto transformer over a two winding transformer is A. Hysteresis losses are reduced B. Saving in winding material C. Copper losses are negligible D. Eddy losses are totally ... voltage applied on primary side is low D. Full-load current is not supplied to the transformer

22 views 0 answers

asked Jul 17, 2021 by jyoti kurekar

What are the disadvantages of Open loop control system?

What are the disadvantages of Open loop control system?
Last Answer : Open loop control system are less reliable. In open loop control system Optimization is not possible. Open loop control system are less accurate.

112 views 1 answer

asked Jul 4, 2019 by anonymous

Why CT is never operated with an open secondary ?

Why CT is never operated with an open secondary ?
Last Answer : CT secondary should never be kept open because it will cause saturation of the core to a high level and very high voltage will appear across the secondary which can breakdown the insulation. One terminal of PT secondary is always grounded to avoid capacitive induction and for human safety

95 views 2 answers

asked Sep 6, 2018 by anonymous

The secondary of a current transformer is always short-circuited under operating conditions because it?

The secondary of a current transformer is always short-circuited under operating conditions because it?
Last Answer : The secondary of a current transformer is always short-circuited under operating conditions because it avoids core saturation and high voltage induction.

108 views 1 answer

asked Mar 19, 2018 by anonymous

How to Open a Tight Jar Lid

How to Open a Tight Jar Lid
Last Answer : How to Open a Tight Jar Lid There are instances when you buy a stubborn jar of pickles (Learn how to pickle), peanut butter or mayonnaise that you can't open with your hands. It can drive you ... no time. If you enjoy reading this article, you might as well read how to can fruits and vegetables.

4 views 1 answer

asked May 14, 2021 by anonymous

How to Open a Can without a Can Opener

How to Open a Can without a Can Opener
Last Answer : How to Open a Can without a Can Opener You're dying to sink your teeth into those canned peaches, but you find yourself without any can opener. At times like this, many people would easily give up ... you'll soon find yourself enjoying the yummy contents of the can. Be careful not to spill the food!

4 views 1 answer

asked May 14, 2021 by anonymous

Open-Face Shrimp Melt

Open-Face Shrimp Melt
Last Answer : Open-Face Shrimp Melt - serves 2 Preparation - 15 minutes 3 ounces shelled and deveined cooked small shrimp, cut lengthwise into halves 1/4 cup chopped celery 2 tbsp chopped scallion (green ... baking sheet arrange sandwiches and broil 6 inches from heat source until cheese melts, about 1 minute.

4 views 1 answer

asked Apr 29, 2021 by anonymous

What will happen to the gain margin if the gain of the open loop system is doubled?

What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth
Last Answer : What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth

200 views 1 answer

asked Jun 18, 2018 by anonymous

If the gain of the open loop system is doubled, the gain margin

If the gain of the open loop system is doubled, the gain margin (1) Is not affected (2) Gets doubled (3) Becomes half (4) Becomes one -forth
Last Answer : If the gain of the open loop system is doubled, the gain margin Becomes half

718 views 1 answer

asked Apr 30, 2018 by anonymous

An open resistor, when checked with an ohm-meter reads?

An open resistor, when checked with an ohm-meter reads?
Last Answer : An open resistor, when checked with an ohm-meter reads infinite.

117 views 1 answer

asked Mar 25, 2018 by anonymous

What is an example of an open loop system?

What is an example of an open loop system?
Last Answer : Open loop system. Ex. Electric heater, washing machine, fan, electric switch, etc

101 views 1 answer

asked Mar 10, 2018 by anonymous

What are the advantages of open loop control system?

What are the advantages of open loop control system?
Last Answer : Open loop control system are simple to design. Open loop control system are generally stable.

125 views 1 answer

asked Mar 10, 2018 by anonymous

what is open loop and close loop control system?

what is open loop and close loop control system?
Last Answer : A) In open loop system the input is independent of output but output is depends on input. A-1. no feedback path in open loop s/m -2. less accuracy than close loop s/m. Ex. Washing ... -3. high accuracy. Ex. Air conditioner ( AC ), rocket launcher, radar system, etc

130 views 2 answers

asked Dec 4, 2017 by anonymous

Why the open circuit test on a transformer is conducted at rated voltage?

Why the open circuit test on a transformer is conducted at rated voltage?
Last Answer : A:The open circuit on a transformer is conducted at a rated voltage because core loss depends upon the voltage. This open circuit test gives only core loss or iron loss of the transformer.

4 views 1 answer

asked Dec 27, 2021 by itszee

49 The open circuit test is carried out in a transformer to find the A. Cu loss B. Core loss C. Total loss D. Insulation resistance

49 The open circuit test is carried out in a transformer to find the A. Cu loss B. Core loss C. Total loss D. Insulation resistance
Last Answer : B. Core loss

11 views 1 answer

asked Jul 21, 2021 by jyoti kurekar

With the help of neat diagram, describe the procedure to carry out phasing out test on a 3 phase transformer. Also state the purpose of conducting this test on 3 phase transformer.

With the help of neat diagram, describe the procedure to carry out phasing out test on a 3 phase transformer. Also state the purpose of conducting this test on 3 phase transformer.
Last Answer : i) This test is carried out on 3-ph transformer to identify primary & secondary winding belonging to the same phase. ii) As shown in fig above all primary & secondary phases ... of this test is to check the respective phases of primary & secondary windings in 3-ph transformer

340 views 1 answer

asked Apr 27, 2020 by anonymous

Why phasing out and polarity test is carried out on three phase transformer?

Why phasing out and polarity test is carried out on three phase transformer?
Last Answer : The phasing out test is carried out to identify the windings (primary and secondary) of corresponding phase of the three phase transformer. The polarity test is carried out to identify the ... identical polarity of the primary and secondary windings of each phase of the three phase transformer.

468 views 1 answer

asked Jul 27, 2019 by anonymous

40 No load test on a transformer is carried out to find A. Copper loss B. magnetising current C. Magnetising current and loss D. Efficiency of the transformer

40 No load test on a transformer is carried out to find A. Copper loss B. magnetising current C. Magnetising current and loss D. Efficiency of the transformer
Last Answer : C. Magnetising current and loss

15 views 1 answer

asked Jul 21, 2021 by jyoti kurekar

22 No load test on a transformer is carried out to find A. copper loss B. magnetising current C. Magnetising current and no load loss d.efficiency of the transformer

22 No load test on a transformer is carried out to find A. copper loss B. magnetising current C. Magnetising current and no load loss D. Efficiency of the transformer
Last Answer : C. Magnetising current and no load loss

15 views 1 answer

asked Jul 21, 2021 by jyoti kurekar

Why would a grown man have a problem with the bedroom door being closed at night?

Why would a grown man have a problem with the bedroom door being closed at night?
Last Answer : He can't be aware of what is going on in the house if the door is closed, may make him uncomfortable and unable to relax and sleep. I do this so if anything happens at night I stand a ... Some rooms just get stuffy when people are sleeping in the same closed up area. He could also be claustraphobc.

0 views 1 answer

asked Mar 1 by anonymous

If there was one day a week where you only had to work half a day, would you opt to sleep in and go in later in the morning, or get up early and leave work early in the afteroon?

If there was one day a week where you only had to work half a day, would you opt to sleep in and go in later in the morning, or get up early and leave work early in the afteroon?
Last Answer : I would personally choose to go in early and leave early. But it really depends on the job. If I really like the job, I might work the full day even if I didn’t have to.

2 views 1 answer

asked Feb 27 by anonymous

State any two commands for managing disk space and also state their use

State any two commands for managing disk space and also state their use
Last Answer : There are primarily two commands that can be used for managing Disk space: 1. df 2. du 1. df - disk filesystem df command (short for disk filesystem) is used to show disk utilization ... the disk space used by files on a machine and crucial for disk space management on unix and linux systems.

21 views 1 answer

asked Jan 31, 2021 by anonymous

The duration of sudden short-circuit test on a synchronous motor is usually about?

Last Answer : The duration of sudden short-circuit test on a synchronous motor is usually about one second.

153 views 1 answer

asked Mar 20, 2018 by anonymous

anonymous · Answer 1 · 2017-09-27T16:23:11+0000

Answer :

High Voltage side is open circuited.

answered Sep 27, 2017 by anonymous

in open circuit or no load test of transformer which side is open circuited?

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