21 views
in Switchgear And Protection by
The arc temperature in Oil Circuit Breaker may reach up to_______. 

(A) 5,000° K (B) 8,000° K (C) 10,000° K (D) None of the above

1 Answer

0 votes
by

The arc temperature in Oil Circuit Breaker may reach up to 5,000° K 

Related questions

1 answer 34 views

The Minimum Oil Circuit Breaker (MOCB) is named because of :  (A) Reduced requirement of oil (B) Reduced requirement of air (C) All of the above (D) None of the above

asked May 8, 2018 in Switchgear And Protection by Shimroz123
1 answer 22 views

ln a minimum oil circuit breaker the oil is used

asked Apr 26, 2018 in Switchgear And Protection by Shimroz123
1 answer 14 views

The arc voltage in a circuit breaker is :

asked Apr 29, 2018 in Utilization of electrical energy by Shimroz123
1 answer 28 views

Which of the following is used in a circuit breaker as the medium in which the arc forms? A) Insulating gas B) Insulating oil C) Vacuum D) All the above

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views
1 answer 72 views

The number of cycles in which a high speed circuit breaker can complete its operation is  (A) 3 to 8 (B) 10 to 18 (C) 20 to 30 (D) 40 to 50

asked May 8, 2018 in Switchgear And Protection by Shimroz123
1 answer 26 views

A circuit breaker is designed to protect an electrical circuit from damage caused by :  (A) Over load (B) Short circuit (C) Over current (D) All of the above

asked May 8, 2018 in Switchgear And Protection by Shimroz123
1 answer 25 views

For selecting a circuit breaker, ______ should be determined.  (A) initial current that flows on occurrence of a short circuit only (B) transient current that flows at the time of circuit interruption only (C) resonant frequency only (D) (A) and (B) 

asked Apr 30, 2018 in Switchgear And Protection by Shimroz123
1 answer 25 views

what is SF6 circuit breaker?

asked Dec 4, 2017 in Switchgear And Protection by Quiz
1 answer 31 views

Breaking capacity of a circuit breaker is usually expressed in terms of  (1) Ampere (2) Volts (3) MW (4) MVA

asked Apr 30, 2018 in Electrical Engineering by Shimroz123
1 answer 86 views

State function of starter and ELCB. (Earth Leakage Circuit Breaker)

asked Sep 18, 2018 in Industry Electrical Systems-I by Shimroz123
1 answer 3 views

Write the purpose of coal and ash handling unit. Also write different activities that arc carried out in this unit.

asked Sep 8, 2018 by Shimroz123
1 answer 26 views

The dielectric strength of transformer oil is expected to be?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 26 views

Which of the following medium is employed for extinction of arc in air circuit breaker ? (a) Water  (b) Oil (c) Air  (d) SF6

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

Identify the correct combination of respective Electric arc welding and Electric resistance welding methods :  (A) Butt welding and Seam welding  (B) Hydrogen shielding and Projection welding  (C) Seam welding and Coated electrode welding  (D) Coated electrode welding and Hydrogen shielding

asked Apr 30, 2018 in Utilization of electrical energy by Shimroz123
1 answer 10 views

The supply for arc welding is : 

asked Apr 29, 2018 in Utilization of electrical energy by Shimroz123
1 answer 16 views

Arc resistance  (1) increases with increase in arc current (2) decrease with increase in arc current (3) is independent of arc current (4) is independent of arc length

asked May 1, 2018 in Utilization of electrical energy by Shimroz123
1 answer 27 views

For arc welding current range is usually  (1) 10 to 15 A (2) 30 to 40 A (3) 50 to 100 A (4) 100 to 350 A

asked Apr 30, 2018 in Utilization of electrical energy by Shimroz123
1 answer 71 views

 A resistor in which the resistance changes exponentially with change in temperature is called as A) Potentiometer B) Phototransistor C) Varactor D) Thermistor 

asked Jun 18, 2018 in Electrical Engineering by Shimroz123
1 answer 73 views

With rise in temperature the resistance of semi-conductors?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 12 views

With rise in temperature the resistance of pure metals?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 11 views

If a transformer is continuously operated the maximum temperature rise will occur in?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 43 views

Temperature co-efficient of resistance is expressed in terms of?

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

A _________ is used to measure the stator % winding temperature of the generator.  (A) Thermocouple (B) Pyrometer (C) Resistance thermometer (D) Thermometer

asked May 8, 2018 in Electrical Machine by Shimroz123
1 answer 18 views

Which of the following has nearly zero temperature coefficient? A) Constantan B) Manganin C) Both A and B D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 16 views

The transducer with negative temperature co-efficient of resistance is (A) Thermistor (B) Resistance Thermometer (C) Strain Gauge (D) Thermocouple

asked Apr 25, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 60 views

What is the temperature sensor?

asked Mar 11, 2018 in Transducers and sensors by Quiz
1 answer 21 views

In which fault the maximum short circuit current occurs?

asked Mar 19, 2018 in Switchgear And Protection by Shimroz123
0 answers 18 views

Which is more temperature stable, a carbon-composition or a metal-film resistor? 

asked Jul 2 by Shimroz123
1 answer 10 views

Problem on temperature coefficient of resistance 3

asked May 20 by Shimroz123
1 answer 10 views

Problem on temperature coefficient of resistance 2

asked May 20 by Shimroz123
1 answer 13 views

Problem on temperature coefficient of resistance 1

asked May 19 by Shimroz123
1 answer 9 views

Based on temperature withstanding ability, classify insulating material. 

asked Sep 4, 2018 by Shimroz123
1 answer 60 views

A certain power MOSFET has a maximum junction temperature specification of 1500o C, a junction-to-case thermal resistance of 1.00 C/W, and a junction-to ambient thermal resistance of 600 C/W. If the ambient temperature is 300o C, then the maximum allowable power dissipation in the device will be A) 1.52 W B) 1.72 W C) 1.92W D) 2.00 W

asked Jun 18, 2018 in MOSFET 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
...