19 views
in Electrical Engineering by
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

Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
Are you a robot ? (Y = Yes / N = No)
To avoid this verification in future, please log in or register.

1 Answer

0 votes
by

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

Related questions

0 answers 10 views

The all-day efficiency of a transformer is the ratio of (1) kWh output and kWh input per day (2) kWh output and kWh input in a day (3) output power and input power (4) input power and output power

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 6 views

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

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 14 views

All good conductors have high?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 32 views

A transformer operates 24 hours day at full -load. It's full -load efficiency is :  (A) equal all day efficiency (B) more than all -day efficiency (C) less than all -day efficiency (D) equal to maximum efficiency

asked Apr 30, 2018 in Electrical Engineering by Shimroz123
0 answers 19 views

A diesel plant has good efficiency at (1) Plant load (2) Half load (3) Full load (4) None of the above

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 20 views

A material for good magnetic memory should have?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 84 views

The skin effect in conductors is due to non uniform distribution of current in it and major portion of current is near the _______ of conductor.  (1) Surface (2) Center (3) Complete cross section area (4) Axis

asked Apr 30, 2018 in Power system by Shimroz123
1 answer 13 views

Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in?

asked Mar 19, 2018 in Transformer by Zeeshan
1 answer 9 views

The conductors have transport phenomena of electrons due to

asked Mar 28, 2018 in Electrical engineering materials by Shimroz123
0 answers 124 views

A digital board has a unipolar square clock of 250MHz. If the clock on the board at all places should have all the harmonic components which have more than 10 % of DC value, the board has to be designed for at least —  A) 250MHz B) 750MHz C) 1250 MHz D) 2500 MHz

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 11 views

all resistance in parallel will have same?

asked Aug 14, 2017 in Electrical Engineering by Zeeshan
1 answer 14 views

all resistance in series will have same?

asked Aug 14, 2017 in Electrical Engineering by Zeeshan
1 answer 12 views

The third generation relays - digital relays - are the basis of distribution system automation because of their: a. Self fault diagnostic capabilities b. Computing capabilities c. Easy interface for remote communication d. All of the above

asked Sep 1, 2018 by Shimroz123
1 answer 12 views

A Two-Port Network is said to be symmetrical when the following equalities hold good (A) Z11 = Z22 and Z12 = Z21 (B) Z11 = Z22 (C) Y12 = Y21 (D) Y11 = Y22 and Y12 = Y21

asked Mar 31, 2018 in Electrical Engineering by Shimroz123
1 answer 13 views

Why energy conservation techniques should be adopted in transformers even though its efficiency is 90%? 

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 18 views

The efficiency of two identical transformers under load conditions can be determined by?

asked Mar 19, 2018 in Transformer by Shimroz123
0 answers 80 views

A current transformer must at all times have (a) a secondary load (b) short circuited secondary (c) either (a) or (b) (d) none of these

asked May 25, 2018 in Transformer by Shimroz123
1 answer 28 views

Which motor have more efficiency, synchronous motor or induction motor?

asked Mar 18, 2018 in Synchronous machine by Shimroz123
1 answer 20 views

In a 3-insulator string voltage distribution system the ratio of capacitance between pin and earth to the self capacitance of each unit is 1/4. If the potential across the top unit is 8 kV, then the string voltage is (A) 22.5 kV (B) 24 kV (C) 26 kV (D) 32.5 kV

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 16 views

In general AC distribution systems, arc interruption in vacuum circuit breakers are designed to function in a time period of (a) One cycle (b) Two to three cycles (c) Within ten cycles (d) None of the above

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
0 answers 18 views

When the SCR conducts, the forward voltage drop will   (a) 0.7 V at all load current (b) 2 to 2.5 V at all load current (c) increases slightly with load current (d) remains constant with load current 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

“In all cases of electromagnetic induction, an induced voltage will cause a current to flow in a closed circuit in such a direction that the magnetic field which is caused by that current will oppose the change that produces the current” is the original statement of

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

All the rules and laws of D.C. circuit also apply to A.C. circuit containing?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
0 answers 18 views

Three single phase transformers are connected in delta-delta to step down a line voltage of 138 kV to 4160 V to supply power to a production plant. The plant draws 21 MW at a lagging power factor of 86 %. Calculate the apparent power furnished by the HV line.  (A) 24.4 MVA (B) 48.8 MVA (C) 12.2 MVA (D) 6.1 MVA 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 10 views

The transient currents are due to _____.

asked May 29, 2018 in Electrical Engineering by Shimroz123
1 answer 12 views

The negative sign in the expression e = – N (d∅)/dt is due to: (1) The Fleming’s Rule (2) Thumb’s Rule (3) Faraday’s Law (4) Lenz’s Law

asked May 29, 2018 in Electrical Engineering by Shimroz123
1 answer 11 views

The presence of alkali oxides in alumino silicate ceramics is likely to result in dielectric breakdown due to   (A) Polarization (B) Conductivity (C) Structural homogeneties (D) Ionization

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

The potential barrier at a P - N junction is due to  1. Majority carriers 2. Minority carriers 3. Both majority and minority carriers 4. Fixed donor and acceptor ions 

asked May 13, 2018 in Electrical Engineering by Shimroz123
1 answer 25 views

The current flow in a battery is due to ______ A) movement of ions B) movement of protons C) movement of holes D) movement of neutrons

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 22 views

In induction type directional over current relay the driving torque is due to interaction of magnetic fields derived from (A) current in the potential coil (B) both voltage and current in the relay windings (C) directional element and non-directional element (D) non-directional element and the trip circuit

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
0 answers 60 views

Transposition of communication and power lines reduces the induced voltages due to electrostatic and electromagnetic induction to a considerable extent. The lines shall be transposed to______ of the length in one barrel. (a) 1/4 (c) 1/6 (b) 1/5 (d) 1/3

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
0 answers 30 views

The second break down in power BJT occurs due to (a) The first break down and the formation of hot spot inside (b) excessive collector current and low collector emitter voltage (c) excessive base current and high collector emitter voltage (d) none of thee above

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 41 views

The equipment installed in power plants to reduce air pollution due to smoke is (A) Induced draft fans (B) De -super heaters (C) Electrostatic precipitators (D) Re -heaters

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 12 views

Production of heat due to electric current is related to . (A) Ohm's law (B) Joule's law (C) Kelvin's law (D) Maxwell's law

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
0 answers 9 views

In AC system, the voltage drops are due to (1) Resistance (2) Inductance (3) Capacitance (4) All of the above 

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 21 views

Global warming is mainly due to   (a) Emission of heat from engines (b) Emission of CO2 due to burning of fossil fuels (c) Use of nuclear energy (d) Air pollution  

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 20 views

The ratio error in current transformer is due to:  (1) Power factor of primary. (2) Wattless component of the current in the primary (3) Exciting current (4) Leakage flux

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
0 answers 16 views

According to Biot-Savart’s laws the magnetic field at a point due to incremental element of length dl carrying a current is  (A) Inversely proportional to the current carried by the element (B) Directly proportional to the current carried by the element (C) Directly proportional to the square of the distance (D) Inversely proportional to the length of the element

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 9 views
1 answer 35 views

In a magnetic material hysteresis loss takes place primarily due to?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 17 views

When a source is delivering maximum power to a load, the efficiency of the circuit is always (a) 50% (b) 75% (c) 100% (d) Depends on the circuit parameters

asked Apr 23, 2018 in Electrical Engineering by Zeeshan
1 answer 18 views

The energy radiated by Sun on a bright Sunny day is approximately:  (A) 700 W/m² (B) 800 W / m² (C) 1 kW / m² (D) 2 kW / m²

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 28 views

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

8,471 questions

7,069 answers

134 comments

3,088 users

...