ln HRC fuse the time between cut-off and final current zero is called
Last Answer : ln HRC fuse the time between cut-off and final current zero is called the arcing time
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asked
Apr 26, 2018
by
anonymous
A fuse wire should have : (A) Low specific resistance and high melting point (B) Low specific resistance and low melting point (C) High specific resistance and high melting point (D) High specific resistance and low melting point
Last Answer : A fuse wire should have : High specific resistance and low melting point
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114 views
1 answer
asked
May 8, 2018
by
anonymous
Last Answer : A fuse in a motor circuit provides protection against short-circuit and overload.
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157 views
1 answer
asked
Mar 20, 2018
by
anonymous
Last Answer : The fuse rating is expressed in terms of current.
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151 views
1 answer
asked
Mar 20, 2018
by
anonymous
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Last Answer : H.R.C. fuse, as compared to a rewirable fuse, has no ageing effect, high speed of operation, high rupturing capacity.
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118 views
1 answer
asked
Mar 20, 2018
by
anonymous
Last Answer : A fuse is connected in series with circuit.
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85 views
1 answer
asked
Mar 20, 2018
by
anonymous
Last Answer : The material used for fuse must have low melting point and high specific resistance.
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163 views
1 answer
asked
Mar 20, 2018
by
anonymous
Last Answer : The main function of a fuse is to prevent excessive currents.
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93 views
1 answer
asked
Mar 19, 2018
by
anonymous
What is fuse?
Last Answer : Ans. Fuse is used to protect an electric circuit when the rated current exceeds in the circuit the fuse wire melts and opens the circuit.
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1 answer
State any two advantages of MCB over Fuse. State the standard specifications of MCB available in the market.
Last Answer : Following advantages of MCB over Fuse: 1. No need of replacement of fuse wire. 2. Manually restore of supply is simple. 3. Fault understanding by visual inspection 4. More safe than fuse The standard specifications of ... 6A, 10A,16A,20A, 25A, 30A, 32A, 40A, 50A, 60A and 63A 6. 250V and 450 v
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194 views
1 answer
asked
May 7, 2020
by
anonymous
State the material used for making (1) Magnetic Core (2) Fuse element
Last Answer : The material used for making of: (1) Magnetic Core : Iron, cobalt, Nickel, CRGO, HRGO , silicon steel (2) Fuse Element: Tin- lead wire, Tinned copper wire
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210 views
1 answer
asked
May 7, 2020
by
anonymous
Write applications of each of the following:(i) Fuse (ii) MCB (iii) MCCB.
Last Answer : i) Applications of fuse: * Used in domestic installations to provide short circuit protection. * Used in commercial / Industrial installations to provide overload and short circuit protection. * Used in ... * Rectifiers panels, * U.P.S, Electronic equipment, * Motors, * Furnaces
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156 views
1 answer
asked
Apr 27, 2020
by
anonymous
Give the function of fuse and switch.
Last Answer : Functions of fuse: * To break the circuit under fault condition. * To provide overcurrent protection to the circuit. * To provide short circuit protection to the circuit. * To provide ... * To make the electric circuit manually. * To break the electric circuit manually.
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121 views
1 answer
asked
Apr 27, 2020
by
anonymous
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What is a fuse ?
Last Answer : A Fuse is a protective device which prevent overloading of current in a circuit.
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125 views
3 answers
asked
Aug 24, 2019
by
anonymous
what is HRC fuse?
Last Answer : HRC (High Rupturing Capacity) fuse HRC fuse is High Rupturing Capacity fuse. At the time of fault it disconnect the circuit very fast. Filling powder is silica sand. No flashover ... speed response Reliable No maintenance CheaperDisadvantages:- We have to replace it manually after each operation.
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154 views
1 answer
asked
Aug 8, 2017
by
anonymous
Define pinch off voltage and drain resistance of FET.
Last Answer : 1 . Pinch-off Voltage: It is the value of the drain to source voltage VDS at which the drain current ID reaches its constant saturation value. Any further increase in VDS does not have any ... drain to source voltage to the change in drain current. It is also called AC/dynamic drain resistance.
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120 views
1 answer
asked
Sep 5, 2018
by
anonymous
The SCR would be turned OFF by voltage reversal of applied anode-cathode ac supply frequency of A) 10 kHz B) 10 Hz C) 5 kHz D) 5 Hz
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187 views
0 answers
asked
Jun 18, 2018
by
anonymous
How is the GTO turned off? A) By using a commutation circuit B) By applying reverse gate pulse C) By using a latch-up circuit D) By reverse anode current pulse
Last Answer : How is the GTO turned off? A) By using a commutation circuit B) By applying reverse gate pulse C) By using a latch-up circuit D) By reverse anode current pulse
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242 views
1 answer
asked
Jun 18, 2018
by
anonymous
What is meant by pinch off voltage in MOSFET?
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102 views
0 answers
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Mar 19, 2018
by
anonymous
Last Answer : SCR turned off when the anode current falls below holding current.
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924 views
1 answer
asked
Mar 6, 2018
by
anonymous
Explain the principle of ON-OFF control and phase control of AC voltage controller with suitable circuit and waveforms.
Last Answer : The integral cycle control (on-off control) and phase angle control are the two types of AC voltage controller. The principle of ON-OFF control: The on-off control is also called an integral cycle ... control. In phase control, the switch is on for some period of each cycle.
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3.5k views
1 answer
asked
Feb 14, 2018
by
anonymous
Last Answer : GTO can be turned on by providing positive pulse to the gate terminal and it can be turn off by providing negative pulse to gate terminal.
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103 views
1 answer
asked
Sep 21, 2017
by
anonymous
Last Answer : No we cannot turn off normal thyristor using Gate.
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1 answer
asked
Sep 21, 2017
by
anonymous
thyristor can be turned off by?
Last Answer : Thyristor can be turned off by making anode potential equal to cathode potential or by making anode potential less than cathode potential.
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134 views
1 answer
asked
Sep 10, 2017
by
anonymous
Draw the structural diagram of GTO. Explain briefly the switching behavior of GTO with the help of appropriate voltage and current waveform.
Last Answer : Gate Turn Off Thyristor (GTO) Conventional Thyristor can be turned on with gate terminal but can not turn off from gate terminal. But in case of Gate Turn Off Thyristor (GTO), we can turn it on and off ... subdivided as storage period (Ts), fall period (Tp) and tail period (Tt).
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1.7k views
1 answer
asked
Aug 8, 2017
by
anonymous
drive the expression for the (1)current that commutates the scr, (2)the peak current, (3) conduction time? in class B,C,D and E.
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4 views
0 answers
When fuse blows?
Last Answer : When a fuse blows, you should replace the fuse and check to seewhat might have caused it to blow. It's a sign that there might besomething causing too much current to flow in the circuit.
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0 views
1 answer
asked
Feb 1
by
anonymous
Why is My Kenwood double din DVD player blows the fuse when hooked to power please help?
Last Answer : Need answer
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1 answer
If a fuse blows frequently, one should (a) replace it with a thin wire (b) replace it with a thick copper wire (c) replace it with a paper clip (d) call an electrician
Last Answer : Ans:(d)
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1 answer
If a fuse of correct size and type blows frequently, ________________. A. try the next higher amperage rating B. try the next lower amperage rating C. look for trouble within the circuit D. reduce the applied voltage 10%
Last Answer : Answer: C
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1 view
1 answer
A fuse that blows often should be replaced only with a fuse of _____________. A. the recommended current and voltage rating B. higher current and voltage rating C. higher current and lower voltage rating D. lower current and higher voltage rating
Last Answer : Answer: A
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4 views
1 answer
Describe the working of HRC fuse with neat diagram.
Last Answer : Working of HRC Fuse: Under normal conditions, the fuse element is at a temperature below its melting point. Therefore, it carries the normal current without overheating. When a fault ... powder and results in the formation of high resistance substance that helps in quenching the arc.
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107 views
1 answer
asked
Jun 23, 2020
by
anonymous
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Explain construction and characteristics of HRC fuse.
Last Answer : Construction of H.R.C. Fuse: Figure shows the essential parts of a typical H.R.C. fuse. It mainly consist of a heat resisting ceramic body. Both the ends of the cermaic body consists ... particular circuit and for coordination purpose. A typical Fuse characteristic is shown in figure below.
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170 views
1 answer
asked
Jul 21, 2019
by
anonymous
Describe the difference between fuse and MCCB.
Last Answer : Sr. No Fuse MCCB 1 Fuse melts / fuses in case of excessive load. MCCB trips off in case of excessive load. 2 Fuse needs to be replaced after every ... Generally protects the load against short-circuit. Generally protects the load against different types of faults.
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2.6k views
1 answer
asked
Jul 21, 2019
by
anonymous
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Where can one find a portable fan (about 10" or so) that blows either warm or cool air?
Last Answer : Why does it need to blow hot air also if you need it to cool?
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1 view
1 answer
asked
Feb 28
by
anonymous
When do I use this proverb "It's an ill wind that blows nobody any good"?
Last Answer : Even misfortune can benefit someone or something.; A calamity for one person usually benefits somebody else. (From Dictionary.com)
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1 answer
asked
Feb 27
by
anonymous
What does it mean when a girl walks behind you and blows on your neck?
Last Answer : Just playful flirting probably
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1 answer
asked
Feb 27
by
anonymous
What fact blows your mind every time you think about it?
Last Answer : The human skeleton weighs around 20 pounds. Always makes me feel morbidly obese.
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1 answer
asked
Feb 27
by
anonymous
Do you have an idea why my VW Jetta 1.8 L Turbo car blows out a cloud of blue smoke whenever I take a sharp corner or on-ramp? It lasts about 10 seconds, then stops smoking!
Last Answer : If the oil cap is not missing or loose I would venture to guess you have a bad seal. Can you see the source? Is it dripping when parked? Oil seals really require a mechanic to properly fix. (Unless you have a good torque wrench and do not mind getting really dirty.)
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0 views
1 answer
asked
Feb 27
by
anonymous
What fact blows your mind?
Last Answer : Horseshoe crabs have been around longer than saturn's rings. Horsehoe crabs have been around approximately 450 million years, Saturns rings have been around an estimated 10 - 100 million years (Based on data from Cassini). Like, WHAT?!
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1 answer
asked
Feb 10
by
anonymous
What recent scientific discovery blows your mind?
Last Answer : That scientists found naturally formed tunnels under Panama that connect with some islands in the south whose names I do not remember
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1 answer
asked
Feb 10
by
anonymous
Thirteen women are kneeling around a circle. A whistle blows, and suddenly all thirteen women began shouting out the names of their sons and daughters, while frantically waving their arms. At last, a ... and one of the women is awarded a trophy. What kind of insanity is happening here? -Riddles
Last Answer : The thirteen women, along with their thirteen sons and daughters (all babies of a crawling age), are competing in a 'Fastest Crawling Baby Contest.' Initially, all of the babies were placed in ... to their mother outside of the circle was the winner, and the trophy was subsequently awarded to her.
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1 answer
asked
Feb 3
by
anonymous
If a boy blows 18 bubbles, Then pops 6 eats 7 and then He pops 5 and blows 1. How many are left? -Riddles
Last Answer : 1
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1 answer
asked
Feb 3
by
anonymous
I'm by nature solitary, scarred by spear and wounded by sword, weary of battle. I frequently see the face of war, and fight hateful enemies; yet I hold no hope of help being brought to me in the ... wounds gape wider and wider; death blows are dealt to me by day and by night.What am I? -Riddles
Last Answer : A shield.
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1 answer
asked
Feb 3
by
anonymous
What kind of wind blows in the rainy season ?
Last Answer : Monsoon winds blow during the rainy season.
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asked
Jan 28
by
anonymous
Why do you feel comfortable when the wind blows on the sweaty body ?
Last Answer : Sweaty body is very uncomfortable. Body sweat absorbs the latent heat of evaporation from the body and evaporates. The fan wind blows away that hot bump. As a result, the body cools down and feels comfortable.
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1 answer
asked
Jan 28
by
anonymous
When managing choking how many back blows should you provide to the victim?
Last Answer : One at a time, until results are achieved (expulsion of lodgedobject, or signal from victim).
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1 view
1 answer
What during the day wind blows toward or away from land?
Last Answer : Feel Free to Answer
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1 answer
What is the name of the man who blows the whistle for a train to go out?
Last Answer : Feel Free to Answer
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1 answer
What is a dry warm wind that blows from the Rocky Mountains down into the valleys below is called a .?
Last Answer : What is the answer ?
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