Description : What is the meaning of ACB, MCCB, NFB?
Last Answer : Air circuit breaker for 400V higher current ratings. Moulded case circuit breaker for 400V medium current ratings. No Fuse Breaker – 75 A capacity
Description : What is the full form of ACB?
Last Answer : Air circuit breaker. It is normally used at 400V and higher current applications (generator breakers).
Description : What are the parts of a brushless AC generator?
Last Answer : Yoke, armature, stator, rotor, primary exciter, main exciter, rotary diode rectifier assembly, impeller, bearing & housing, end cover, terminal block, AVR.
Description : What is a shaft generator?
Last Answer : A shaft generator is coupled to the main engine. It uses the main engine as its prime mover and has a frequency converter (thyristor controlled) that converts the variable engine speed to near constant speed and ... speed (full speed) and not at manoeuvring speed. Ask E/O and 2/E for more details.
Description : How does the emergency generator start automatically?
Last Answer : It is activated by a under voltage relay. When there is blackout, the under voltage relay senses loss of voltage and starts up the emergency generator. Similarly when the power is restored, the relay stops the emergency generator. Ask E/) for more details.
Description : After a black out the emergency generator comes on; On restoring the main supply we are closing the circuit breaker of the main generator without bothering about synchronizing. How is this possible?
Last Answer : There is a power link connection breaker between the main generator and the emergency generator. During black out, this breaker trips. The emergency generator starts and its breaker closes and feeds only ... , there is no paralleling between main and emergency generator. Ask E/O for more details.
Description : If the AVR, is defective, when additional loads come on will the generator be able to take it?
Last Answer : No. Ask E/O and refer to Dennis T Hall.
Description : The only difference between construction of DC generator and Ac generator is that of: a. carbon brush b. Bar magnet c. electromagnet d. Horseshoe magnet
Last Answer : b. Bar magnet
Description : Which of the following converts electric energy into mechanical energy: a. Transformer b. DC generator c. Motor d. AC generator
Last Answer : d. AC generato
Description : Which component is mainly used in a DC generator: a.slip ring b. commutator c. magnet d. coil
Last Answer : b. commutator
Description : In the plane of AC generator coil is parallel to the field, then emf induced in coil is: a. maximum b. minimum c. zero d. intermediate
Last Answer : b. minimum
Description : Which one is not present in AC generator: a. Armature b. magnet c. slip ring d. commutator
Last Answer : c. slip ring
Description : The most common source of AC voltage is: a. motor b. generator c. cell d. transformer
Last Answer : c. cell
Description : The principle of AC generator is: a. Mutual induction b. self induction c. electromagnetic induction d. Induction
Last Answer : b. self induction
Description : In the plane of the A.C generator coil is perpendicular to the field, then induced emf in the coil is: a. Maximum b. minimum c. zero d. intermediate value
Description : Alternating current generator converts.......... energy into electrical energy? a. mechanical energy b. chemical energy c. solar energy d. potential energy
Last Answer : a. mechanical energy
Description : The Principle of an alternating current generator is based on: a. Coulomb’s law b. Ampere’s law c. Faraday’s law d. Lenz’s law
Last Answer : a. Coulomb’s law
Description : The output waveform produced due to time base generator in a CRO is a) saw tooth b) sinusoidal c) linear d) helical
Last Answer : a) saw tooth
Description : A circuit which develops voltage across the horizontal deflection plates is known as a) Time base generator b) Electron gun c) Thermionic diode d) Zener diode
Last Answer : a) Time base generator
Description : Briefly explain how an electrical generator converts mechanical energy into electrical energy.
Last Answer : Working principle of DC generator: * Working principle of DC generator is the principle of dynamically induced emf or electromagnetic induction. * According to this principle, when flux is cut by a conductor, an ... , the flux is cut by the armature winding and an emf is dynamically induced in it.
Description : Why do we close the switch at 11 o'clock and not at 12 o' clock?
Last Answer : When the synchroscope is approaching 12 o'clock the "slip" (differential) between the sine waves is approaching minimum (slip is zero when the synch'scope is at 12 o'clock) and the voltage differential between ... delay to close, by doing at 11 o'clock, we are achieving closing close to 12 o'clock.
Description : Inthe _______method, after thestation finds the line idle it sends or refrainfrom sending based on the outcome ofa random number generator. If the line is busy, it tries again A) nonpersistent B) 1-persistent C) p-persistent D) none of the above
Last Answer : p-persistent
Description : When does the engine High Pressure fuel shut off valve close? a. After a booster pump failure b. When the engine fuel switch is selected ‘ON’ during engine start c. When flight idle is selected d. When the engine fuel switch is selected ‘OFF’ during engine shut-down
Last Answer : d. When the engine fuel switch is selected ‘OFF’ during engine shut-down
Description : How can it happen?
Last Answer : Single phasing is caused by the use of single-phase protection devices such as fuses. Three phase loads should be protected by devices which cause the interruption of power to all three ... fault occurs. Defective contacts or loose connections in three phase breakers can also cause single phasing.
Description : Why when I press the "answer" button, nothing happens? it`s rather irksome!
Last Answer : Try hitting the bottom part of it with your cursor.
Description : If you press the power button on a Toyota Prius while in motion will it shut off the engine, or take it as a mistake?
Last Answer : answer:This link may be of interest. You could turn it off, but you also lose power steering that way.
Description : Is there a button you can press to bypass the 'Out of Ink' warning on a Canon mp620b, so it will print with the other inks?
Last Answer : My guess is you are trying to print out text or a form. There isn't [that I know of] any button with that kind of function. But there is a way around it. Open the document in black ink ... printer should now print. Few people will notice that your black is slightly off (I know from experience). ;)
Description : Would you press the button?
Last Answer : I have NO idea. But I really want to see this movie.
Description : In an elevator, if you press the wrong floor number, why can't you "deselect" the errant floor by pressing the same button again?
Last Answer : Man, I was just thinking the exact same thing——okay, I wasn’t…
Description : What's the term for the annoying delay between when I press the button on my camera and when it takes the picture?
Last Answer : shutter speed?
Description : Do you press the self-destruct button.
Last Answer : I don't think I do it intentionally, but sometimes because I put so much energy into wondering when things will fall apart, I draw destruction to myself. Lately though, I've been doing a pretty good ... self-destruct button. In actuality (most of) it was one of the smartest things I've ever done.
Description : If there was an ignore button that you could use in real life... meaning you hit the button and you don't hear or see a whole person, would you use it? If so, on whom would you press it?
Last Answer : That could easily be a very bad idea. On my grumpy days, I might be tempted to press it for everyone. Could you unpress the button?
Description : Suppose engineers are able to build a space elevator within the next 40 years, would you enter the elevator on the ground floor and press the button for floor 100,000?
Last Answer : Of course, as long as the chance of dying horribly was less than 10%. Even so, if something happened and you fell, that’d be one hell of a base jump. :) Or you know, Tower of Terror. Depending.
Description : How come there isn't music controls when you press the sleep button on an iPhone or iPod touch?
Last Answer : You can! Just double-tap the circle button.
Description : Would YOU press the red button?
Last Answer : Would the cash finance a much needed surgery for a loved one? In that particular instance, I might.
Description : What does it mean to quickly press the computer mouse button once?
Last Answer : click
Description : What does it mean to quickly press the mouse button once?
Description : Trying to reset the time on my Mother-in-Law's clock radio - model RP5420C. When powering it on, I press the time zone button once, assuming that sets it to CST with DST switched to on. DST is displayed-the time never resets&the time zone doesn't displa?
Last Answer : The manual can be downloaded from this site, it seems to be a common issue that there is no manual included in the box. Hope this helps: http://portablemedia.manualsonline.com/manuals/mfg/rca/rp5420.html
Description : To reloada Webpage, press the“““.button. (A) Redo (B) Reload (C) Restore (D) Ctrl (E) Refresh
Last Answer : Refresh
Description : To navigate to a new web page for which you know the URL, type that URL in the browser's … and press Enter a) Address bar b) Domain bar c) Address button d) Name button e) None of these
Last Answer : a) Address bar
Description : To reload a Web page, press the.... button. 1) Redo 2) Reload 3) Ctrl 4) Refresh
Last Answer : 4) Refresh
Description : To reload a Web page, press the.... button. 1 Redo 2 Reload 3 Ctrl 4 Refresh
Last Answer : 4 Refresh
Description : On a common hypotenuse AB, two right angled triangles, ACB and ADB are situated on opposite sides. -Maths 9th
Last Answer : According to question ∠BAC = ∠BDC.
Description : triangle ABC is right angled at A. AL is drawn perpendicular to BC. Prove that /_ BAL = /_ ACB -Maths 9th
Last Answer : NEED ANSWER
Last Answer : This answer was deleted by our moderators...
Description : In the figure (not to scale ), O is the centre of the circle and `/_OBA=30^(@)`. Find `/_ ACB`
Last Answer : In the figure (not to scale ), O is the centre of the circle and `/_OBA=30^(@)`. Find `/_ ACB`
Description : In the above figure, O is the centre of the circle AB,AD and CD are the chords . If `/_ ADC=130^(@)` then fid `/_ ACB`.
Last Answer : In the above figure, O is the centre of the circle AB,AD and CD are the chords . If `/_ ADC=130^(@)` then fid `/_ ACB`.
Description : In the following figure, if `/_ AOB =60^(@)` then `/_ ACB=30^(@)`. [True `//` False `//` Cannot say ]
Last Answer : In the following figure, if `/_ AOB =60^(@)` then `/_ ACB=30^(@)`. [True `//` False `//` Cannot say ]