60 views
in Electrical engineering materials by

1 Answer

0 votes
by

The magnetism left in the iron after exciting field has been removed is known as residual magnetism.

Related questions

1 answer 9 views

After firing as SCR, the gating pulse is removed. The current in the SCR will  1. remain the same 2. immediately fall to zero 3. rise up 4. None 

asked May 13, 2018 in Power Electronics by Shimroz123
1 answer 19 views

The converse of hardness is known as?

asked Mar 28, 2018 in Electrical engineering materials by Shimroz123
1 answer 49 views

The switch in the circuit has been closed for a long time. It is opened at t = 0. At t = 0+, the current through the 1 micro farad capacitor is A) 0A B) 1A C) 1.25A D) 5A

asked May 20, 2018 in Network Analysis by Shimroz123
1 answer 11 views

True value has been 50 whereas measured value is 40 then the percentage error in the reading will be ______.  (A) 20% (B) 40% (C) 50% (D) 30%

asked May 8, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 15 views

The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as

asked Mar 25, 2018 in Network Analysis 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
0 answers 11 views

A peak reading voltmeter has been calibrated with a sine wave signal and scaled in rms volts. If a square wave signal ± 1V peak is applied, the meter reading will be (a) 0.555 V (b) 0.707 V (c) 1 V (d) 1.75 V

asked May 25, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 12 views

An iron ring of mean circumference 80 cm is uniformly wound with 500 turns of wire and carries 0.8A. Find the magnetic field strength. 

asked Sep 2, 2018 by Shimroz123
1 answer 15 views

The reverse breakdown phenomenon in a zener diode is known as

asked May 14, 2018 in Diode by Shimroz123
0 answers 22 views

The power supply whose output voltage varies with variation in input voltage or output load current is known as   (a) Regulated Power Supply (b) Unregulated Power Supply (c) Uninterruptible Power Supply (d) Switched Mode Power Supply 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 98 views

When a conductor cuts magnetic flux, an emf is induced in the conductor. This is known as  (a) Joule's law (b) Faraday's law (c) Coulomb's law (d) Ampere’s law

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

A control system in which the control action is somehow dependent on the output is known as?

asked Mar 27, 2018 in Control System by Shimroz123
1 answer 15 views

The circuit whose properties are same in either direction is known as?

asked Mar 25, 2018 in Network Analysis by Shimroz123
1 answer 21 views

The property of a material which opposes the creation of magnetic flux in it is known as?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
0 answers 31 views

A type of conductor known as expanded ACSR has a filler separating inner steel strands from outer aluminium strands and this filler is (a) mica sheet (c) paper tape (b) cotton tape (d) aluminium foil

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
0 answers 11 views

The microprocessor 68020 has been developed by A) Motorola B) Zilog C) Intel D) Texas

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 119 views

A Transmission line conductor has been suspended freely from two towers and has taken the form of a catenary that has c = 487.68m. The span between the two towers is 152 m, and the weight of the conductor is 1160 kg/km. Calculate the length of the conductor.  (A) 487.68 m (B) 152.614 m (C) 5.934 m (D) 11.9 m 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 25 views

lf a travelling-wave travelling along a loss-less overhead line does not result in any reflection after it has reached the far end, then the far end of the line is

asked Apr 26, 2018 in Switchgear And Protection by Shimroz123
1 answer 13 views

 ____ is known as a computer network in which one centralized, powerful computer is a hub to which many less powerful personal computers or workstations are connected. The clients run programs and access data that stored on the server.  a) Client-Server network b) Extranet c) Internet d) None of the above.

asked May 13, 2018 in Computer Engineering by Shimroz123
0 answers 17 views

Suppose that 1000 electrons are removed from a neutral dielectric. How much charge, in coulombs, is stored in the dielectric?

asked Jun 29 by Shimroz123
0 answers 14 views

If the emitter resistance ‘Re ’ in a transistor amplifier is removed, then (a) base to emitter junction will be less forward biased. (b) gain of amplifier decreases. (c) Q-point becomes unstable. (d) All of these 

asked May 25, 2018 in Amplifier by Shimroz123
1 answer 9 views

At transition temperature the value of the critical field is?

asked Mar 28, 2018 in Electrical engineering materials by Shimroz123
1 answer 28 views

 A transformer has maximum efficiency at 3/4 full load. The ratio of its iron losses and full load copper loss is : -  a) 16/9 b) 4 / 3 c) 3/4 d) 9 /16

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

In moving iron instruments, eddy current damping cannot be used as  (a) They have a strong operating magnetic, field (b) They are not normally used in vertical position (c) They need a large damping force, which can only be provided by air friction (d) The introduction of a permanent magnet required for eddy current damping would distort the existing weak operating magnetic field

asked Apr 23, 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 18 views

The CF is known as ________ A. carry flag B. condition flag C. common flag D. single flag

asked Sep 28, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 11 views

Angle between the shear plane and work surface is known as : (A) lip angle (B) rake angle (C) cutting angle (D) shear angle

asked Jun 14, 2018 in Mechanical Engineering by Shimroz123
1 answer 13 views

The ratio of maximum displacement of the forced vibration to the deflection due to static force is known as : (A) Damping Factor (B) Damping Coefficient (C) Logarithmic Decrement (D) Magnification Factor

asked Jun 14, 2018 in Mechanical Engineering by Shimroz123
1 answer 24 views

The property of materials by which they can be drawn into wires is known as: A) malleability B) elasticity C) creep D) ductility

asked Jun 4, 2018 in Electrical Engineering by Shimroz123
1 answer 10 views

A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as 1. Shift 2. Sand wash 3. Swell 4. Scab

asked May 17, 2018 in Mechanical Engineering by Shimroz123
1 answer 12 views

 ____ is known as unauthorized access to the system.  a) Decryption b) Encryption c) Hacking d) None of the above

asked May 13, 2018 in Computer Engineering 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
...