What is a descending or step down transformer ?

1 Answer

Answer :

A transformer that converts a low current of high voltage to a high current of low voltage is called a descending or step down transformer.

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Description : What is the way to understand transformer step up or step down ?

Last Answer : How to understand the step-up or step-down of a transformer: If the number of patches on the secondary side is more than the primary side of the transformer, then that transformer is a step-up ... than the primary side of the transformer, then that transformer is a step down transformer.

Description : If output voltage is greater than input voltage, then transformer is A. step up B. step down C. faulty D. fatal

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Description : The doorbell on your house requires a 12 volt alternating current. A transformer having a primary winding of 1,600 turns is to be used to step down your house's 110-volt alternating current. How many turns are there on the secondary winding?

Last Answer : ANSWER: 175 TURNS 

Description : Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Last Answer : (3) Reflect back the heat given by earth Explanation: It is because the night side of Earth will radiate infra-red radiation (heat) back into space. When there is cloud cover, the clouds act like a blanket and trap the heat close to the ground just like a blanket traps heat close to our body.

Description : Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Last Answer : reflect back the heat given by earth

Description : What is Arohi or Step Up Transformer ?

Last Answer : A transformer that converts high current of low voltage to low current of high voltage is called ascending or step up transformer.

Description : Which quantity remains constant in a step-down transformer? -Do You Know?

Last Answer : answer:

Description : Which quantity remains constant in a step-down transformer? -Do You Know?

Last Answer : answer:

Description : Which quantity remains constant in a step-down transformer? -Do You Know?

Last Answer : answer:

Description : Which quantity remains constant in a step-down transformer? -Do You Know?

Last Answer : answer:

Description : Which quantity remains constant in a step-down transformer? -Do You Know?

Last Answer : answer:

Description : Which quantity remains constant in a step-down transformer? -Do You Know?

Last Answer : answer:

Description : How do I step down a step up transformer ?

Last Answer : If we want to step up a transformer, we need to punch more of the secondary coil than the number of punches of the primary coil of the transformer. And in order to determine the number of these ... already been written on our electronics site, I did not repeat it. Read the article from this link.

Description : What is a step down transformer ?

Last Answer : If you get low voltage with high voltage supply, it is called step down transformer.

Description : When used for taking resistance measurements, a volt-ohm-milliammeter is normally powered by _____________. A. a hand cranked generator B. internal storage batteries C. the current in the circuit being tested D. a step down transformer

Last Answer : Answer: B

Description : What can be used to replace the exciter in the circuit shown in the illustration? EL-0101 A. A step-up transformer. B. A rectifier. C. A step-down transformer. D. An operational amplifier.

Last Answer : Answer: B

Description : When a transformer is used to step down voltage, the low voltage winding is _____________. A. part of the core B. the primary coil C. not insulated D. the secondary coil

Last Answer : Answer: D

Description : What is the maximum current allowed to be drawn from the secondary of a 2 KVA step-down transformer with a turns ratio of four to one if connected across a 440 volt line? A. 1.1 amps B. 4.5 amps C. 18.1 amps D. 22.7 amps

Last Answer : Answer: C

Description : What is the maximum allowable primary current of a 2 KVA step-down transformer with a four to one turns ratio if connected across a 440 volt line? A. 1.1 amps B. 4.5 amps C. 18.1 amps D. 27.7 amps

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Description : What are the applications of step-up & step-down transformer?

Last Answer : A:Step-up transformers are used in generating stations. Normally the generated voltage will be either 11kV. This voltage (11kV) is stepped up to 110kV or 220kV or ... and made available at consumer premises. The transformers used at generating stations are called power transformers.

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

Last Answer : K>1 for step up transformer K

Description : Which quantity remains constant in a step-down transformer?

Last Answer : Power

Description : What is a step down transformer?

Last Answer : A transformer which decreases the input voltage of the AC source is called step down transformer.

Description : In step down transformer, the AC output gives the current _________ than the input current.

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Description : Which of the following devices will receive voltage surge first travelling on the transmission line ? (a) Lightning arresters (b) Relays (c) Step-down transformer (d) Switchgear

Last Answer : (a) Lightning arresters

Description : Does 1:5 indicate a step-up or step-down transformer?

Last Answer : Step up.

Description : Does 1:5 indicate a step-up or step-down transformer?

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Description : To construct a step down transformer, the condition is: a. Ns > Np b. Np > Ns c. Np = Ns d. Np . Ns = 1

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Description : A generator is connected through a 20 MVA, 13.8/138 kV step down transformer, to a transmission line. At the receiving end of the line a load is supplied through a step down transformer of 10 MVA, 138/69 kV rating. A 0.72 ... load (in per unit) in generator will be (A) 36 (B) 1.44 (C) 0.72 (D) 0.18

Last Answer : A generator is connected through a 20 MVA, 13.8/138 kV step down transformer, to a transmission line. At the receiving end of the line a load is supplied through a step down transformer of 10 MVA, 138/ ... MVA and 69 kV in load circuit, the value of the load (in per unit) in generator will be 36 

Description : A single-phase, 230 V, 50 Hz ac mains fed step down transformer (4:1) is supplying power to a half-wave uncontrolled ac-dc converter used for charging a battery (12 V dc) with the series current limiting resistor being 19.04 Ohm. The charging current is  (A) 2.43 A (B) 1.65 A (C) 1.22 A (D) 1.0 A

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Description : In a step-up or step-down transformer, electrical power is transferred from one circuit to another without change in

Last Answer : In a step-up or step-down transformer, electrical power is transferred from one circuit to another without change in frequency

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

Description : A 1100 kVA, 11 kV/1.1 kV conventional two-winding transformer is connected as a 12.1 kV/11 kV step-down auto-transformer. The rating of the auto-transformer is (A) 1000 kVA (B) 1100 kVA (C) 11000 kVA (D) 12100 kVA

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Description : In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?

Last Answer : In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of less than 15A.

Description : Can you arrange the numbers from 1 to 100 so there is no ascending or descending subsequence of length greater than 10?

Last Answer : I’m not sure if I’m misunderstanding your question. Why not just arrange them in 5 number sequences from the beginning and the end of the numbers. 1–5 95–100 6–11 89–94 etc

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Last Answer : NEED ANSWER

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