Can you help by answering this question?

What is the analog circuit?

10 views
in Basic concepts by
In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is?

A.one-fourth the primary current

B.four times the primary current

C.equal to the primary current

D.one-fourth the primary current and equal to the primary current

1 Answer

0 votes
by

In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is?

A.one-fourth the primary current

B.four times the primary current

C.equal to the primary current

D.one-fourth the primary current and equal to the primary current

Related questions

1 answer 28 views

A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is? A.0.2 B.0.4 C.5 D.25

asked May 15, 2018 in Basic concepts by Shimroz123
1 answer 11 views

When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is? A.12 V B.120 V C.240 V D.2,400 V

asked May 15, 2018 in Basic concepts by Shimroz123
1 answer 25 views

A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary?  (A) 30 Volts (B) 480 Volts (C) 120 Volts (D) 60 Volts

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 12 views

If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ohms? A.250 ohms B.25 ohms C.6,250 ohms D.62,500 ohms

asked May 15, 2018 in Basic concepts by Shimroz123
0 answers 20 views

One 200 V, 100 W bulb is connected in series with primary of a 200 V, 10 kVA transformer. If its secondary is kept open circuited, then the bulb would have (1) Full brightness (2) Poor brightness (3) A little less than full brightness (4) More than full brightness 

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
0 answers 12 views

The ratio of the primary to secondary voltage of a transformer is 2:1. The saving in the turns of weight of copper required if an autotransformer is used instead of two winding transformer is (1) 50% (2) 33.33% (3) 66.67% (4) 97% 

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 24 views

The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 ohms load. The turns ratio is 3:1. What is the secondary voltage? A.2 V B.20 V C.180 V D.18 V

asked May 15, 2018 in Basic concepts by Zeeshan
1 answer 10 views

The turns ratio of a transformer having 200 primary turns and 1,200 secondary turns is? A.6 B.24 C.1.66 D.66

asked May 15, 2018 in Basic concepts by Shimroz123
1 answer 13 views

If the secondary turns of a transformer are doubled and at the same time primary voltage is reduced to half then the secondary voltage will

asked May 15, 2018 in Transformer by Shimroz123
1 answer 11 views

In a three phase transformer, if the primary side is connected in star and secondary side is connected in delta, the angle difference between phase voltage in the two cases will be: (A) delta side will lag by -30° (B) star side will lag by -30° (C) delta side will lead by 30° (D) star side will lead by -30°

asked Apr 11, 2018 in Computer Engineering by Shimroz123
1 answer 24 views

In a transformer the energy is conveyed from primary to secondary?

asked Mar 27, 2018 in Transformer by Shimroz123
0 answers 39 views

In a fullwave rectifier circuit with centre tap transformer, if voltage between one end of secondary winding and centre tap is 300V peak, then PIV (peak inverse voltage) is a. 300 V b. 150 V c. 600 V 5 d. 900 V

asked Apr 12, 2018 in Electronics Engineering by Shimroz123
1 answer 20 views

In a transformer the resistance between its primary and secondary should be?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 28 views

What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased? A) It increases B) It decreases C) It remains the same D) Cannot say unless the actual percentage increase in the frequency is known

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
0 answers 24 views

A single phase 230 V/ 150 V , 1 kVA, 50 Hz transformer is supplied by 230 V AC supply. Find the full load primary and secondary current. 

asked Sep 1, 2018 by Quiz
1 answer 28 views

The primary winding of a 220/6 V, 50 Hz transformer is energised from 110 V, 60 Hz supply. The secondary output voltage will be (A) 3.6 V. (B) 2.5 V. (C) 3.0 V. (D) 6.0 V.

asked May 22, 2018 in Transformer by Shimroz123
1 answer 24 views

The primary winding of a 220/6 V, 50 Hz transformer is energised from 110 V, 60 Hz supply. The secondary output voltage will be; (A) 3.6 (B) 2.5 V (C) 3.0 V (D) 6.0 V

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
0 answers 26 views

The maximum flux in a transformer is φm when primary voltage is V and the frequency is f. If the primary voltage is 2 V and frequency is f/2, the flux will be (a) 4 φm (b) 0.25 φm (c) φm (d) 0.5 φm

asked May 25, 2018 in Transformer by Shimroz123
1 answer 14 views

For a pulse transformer, the material used for its core and the possible turn ration from primary to secondary are respectively   (A) ferrite : 20 : 1 (B) laminated iron : 1 :1 (C) ferrite : 1 : 1 (D) powered iron : 1: 1

asked May 17, 2018 in Transformer by Shimroz123
0 answers 17 views

A 1:5 step-up transformer has 120V across the primary and 600 ohms resistance across the secondary. Assuming 100% efficiency, the primary current will be:  (A) 0.2 Amp. (B) 5 Amps. (C)10 Amps. (D) 20 Amps

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 13 views

Draw a neat sketch of moving primary fixed secondary double sided LIM. Write one advantage and one disadvantage of it. 

asked Sep 2, 2018 by Shimroz123
1 answer 15 views

In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half of the secondary winding is 30 V. Then PIV is: (1) 30 V (2) 60 V (3) 15 V (4) 10 V

asked May 28, 2018 in Electronics Engineering by Shimroz123
1 answer 9 views

if the rated voltage from the power lines is applied to the primary of a single-phase transformer which is operated on no-load, then

asked Apr 1, 2018 in Electrical Engineering by Shimroz123
0 answers 11 views

An air core transformer has primary and secondary inductors of 8mH and 10 mH respectively. The mutual inductance is 5mH. The coefficient of coupling is  A) 1/8 B) 1/6 C) ¼ D) ½

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 54 views

If a transformer primary is energised from a square wave voltage source, its output voltage will be a:  (A) square wave (B) sine wave (C) triangular wave (D) pulse wave

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
2 answers 51 views

When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 26 views

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, respectively  (b) Ratio and phase angle error, respectively  (c) Any eddy current loss and hysteresis loss, respectively  (d) The hysteresis loss and eddy current loss, respectively

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 27 views

For a short line if the receiving end voltage is equal to the sending end voltage under loaded conditions: a) the sending end power factor is unity b) the receiving -end power factor is unity c) the sending-end power factor is leading d) the receiving end power factor is leading

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 16 views

Draw and explain the operation of pressure transducer having diaphragm as a primary sensor and four strain gauges as secondary sensors.

asked Sep 13, 2018 by Shimroz123
1 answer 26 views

A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt- hours of energy does it consume? A.20.16 kWh B.201.6 kWh C.2.01 kWh D.8.4 kWh

asked May 15, 2018 in Basic concepts by Shimroz123
1 answer 18 views

The e.m.f. induced in the primary of a transformer:  (A) is in phase with the flux (B) lags behind the flux by 90 degree (C) leads the flux by 90 degree (D) is in phase opposition to that of flux

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 6 views

If the no load voltage of a certain generator is 220V and the rated load voltage is 200V, then the voltage regulation is: a. 1% b. 10% c. 20V d. 9%

asked Sep 1, 2018 by Shimroz123
1 answer 13 views

A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed.  a. The circuit will become unstable b. The voltage gain will decrease  c. The voltage gain will increase d. The circuit will become stable

asked Aug 31, 2018 by Shimroz123
1 answer 13 views

The voltage induced across a certain coil is 200 mV. A 1200 resistor is connected to the coil terminals. The induced current will be: A. 1.7 mA B. 16 mA C. 12 mA D. 120 mA

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
1 answer 19 views

In a lamp load when more than one lamp are switched on the total resistance of the load?

asked Mar 25, 2018 in Basic concepts by Shimroz123
0 answers 18 views

If the transmission line is loaded with leading reactive volt amperes, there will be rise of voltage at the receiving end and this (a) increases (b) decreases (c) remains same with the increase in the length of line (d) none of these

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 23 views

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

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 13 views

What will happen if the primary of a transformer is connected to D.C. supply?  (A) Transformer will operate with low efficiency (B) Transformer will operate with high efficiency (C) No effect (D) Transformer may start to smoke and burn 

asked May 8, 2018 in Electrical Engineering by Shimroz123
0 answers 21 views

A large transformer operating at no load draws an exciting current Io of 5A, when the primary is connected to a 120 V, 60 Hz source. From a wattmeter test, it is known that iron losses are equal to 180 W. Calculate the reactive power absorbed by the core.  (A) 600 var (B) 572 var (C) 180 var (D) 360 var 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 8 views

Which one is not a charging method for secondary cells? A. constant current method B. constant potential method C. Rectifier method D. Magnetism method  

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
1 answer 21 views

A 3-phase voltage source inverter is operated in 180o conduction mode. Which one of the following statements is true ?  (A) Both pole-voltage and line-voltage will have 3rd harmonic components (B) Pole-voltage will have 3rd harmonic component but line-voltage will be free from 3rd harmonic (C) Line-voltage will have 3rd harmonic component but pole-voltage will be free from 3rd harmonic (D) Both pole-voltage and line-voltage will be free from 3rd harmonic components

asked May 18, 2018 in Power Electronics by Shimroz123
1 answer 14 views

The average value of a 12 V peak sine wave over one complete cycle is? A.0 V B.1.27 V C.7.64 V D.6.37 V

asked May 15, 2018 in Basic concepts by Shimroz123
0 answers 12 views

The secondary output voltage of a saturable core frequency meter is the function of (a) only frequency (b) only primary voltage (c) both (a) and (b) (d) None of above

asked May 25, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

The frequency of a voltage at the secondary is -  a) greater than that of primary b) equal to that of primary c) less than that of primary d) none of the above

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
0 answers 62 views

The ammeter reading connected across a CT secondary is 3 A and the voltage reading connected across a PT is 90 V. If the specification of the CT and PT are respectively 1000 A/5 A and 6.6 kV/110 V, What is the actual current and voltage of the line? 

asked Apr 3, 2018 in Lesson 2 Generation, Transmission and Distribution of Electric Power an Overview by Shimroz123
1 answer 593 views

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

asked May 14, 2018 in Transformer by Shimroz123
1 answer 31 views

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

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 21 views

Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 13 views

In a transformer, low voltage winding is placed near the core in case of concentric windings so as to  1. Reduce the leakage flux 2. Reduce the insulation requirement 3. Reduce the risk of voltage shock in case of insulation breakdown 4. Reduce the core loss   From these, the correct answer is (a) 1, 2, 3 (b) 2, 3, 4 (c) 1, 2, 3, 4 (d) 2, 3

asked May 13, 2018 in Transformer by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units
...