Description : Before working on electrical equipment containing capacitors, what should you do to the capacitors?
Last Answer : Discharge them by shorting them to ground.
Description : What effect does an increase in capacitance have on a capacitor’s opposition to current flow?
Last Answer : Opposition to current flow decreases.
Description : What tool is used to de-energize capacitors in a circuit that has been disconnected from its power source?
Last Answer : Shorting probe.
Description : Why are synchro capacitors placed physically close to differentials transmitters and CTs?
Last Answer : To keep the connections as short as possible in order to maintain system.
Description : How are synchro capacitors connected in a circuit?
Last Answer : They are delta-connected across the stator windings.
Description : What type of current is eliminated by synchro capacitors?
Last Answer : Magnetizing current.
Description : What type of synchros usually require the use of synchro capacitors?
Last Answer : TDXs, CDXs, and Cts.
Description : In a full-wave voltage doubler, are the capacitors connected in series or in parallel with the output load?
Last Answer : In parallel.
Description : Why is the use of large value capacitors in filter circuits discouraged?
Last Answer : Expense
Description : Which oscillator uses tapped capacitors for feedback?
Last Answer : Colpitts.
Description : Examine the three capacitors shown below. What is the capacitance of each?
Last Answer : a. 26µF or 260,00pF b. 630pF c. 9600pF
Description : An amount of INR 0.50 (50 paise) per article shall be charged for e-IOD service. The charge would be paid in the form of postage/frank etc. For example, for a Bill Mail Service article ... eIoD facility, the postage affixed/franked should be INR 3.50 Above statement is a) True b) False
Last Answer : a) True
Description : Under the influence of electric field, the dielectric materials will get charged instantaneously. State True/False. a) True b) False
Description : The potential of a uniformly charged line with density λ is given by, λ/(2πε) ln(b/a). State True/False. a) True b) False
Description : What is the relationship between charged bodies?
Last Answer : Like charges repel, and unlike charges attract with a force directly proportional to the product of their charges and inversely proportional to the square of the distance between them
Description : Three capacitors with different capacitances are connected in series. Which of the following statements is TRUE? w) All three of the capacitors have the same potential difference between their plates. x ... y) The capacitance of the system depends on the voltage applied across the three capacitors.
Last Answer : ANSWER: X -- THE MAGNITUDE OF THE CHARGE IS THE SAME ON ALL OF THE CAPACITOR PLATES
Description : (True or False) The larger the current required to produce full-scale deflection of the meter coil, the better the sensitivity of the meter.
Last Answer : False.
Description : When you check the specific gravity of the battery electrolyte with a hydrometer, it should be kept in mind that ____________. A. the battery is fully charged when the indicator floats low in ... taken immediately after water is added to the cell D. temperature has no effect on hydrometer readings
Last Answer : Answer: C
Description : The central information commission/state information commission has a duty to receive complaint from any person a) Who has not been able to submit an information request because a PIO has not been ... d) Who thinks information given is incomplete or false or misleading e) All the above
Last Answer : e) All the above
Description : I need to buy really low voltage electrolytic capacitors.
Last Answer : answer:Allied Electronics http://www.alliedelec.com/ Weird hobby though.
Description : How do I test how well capacitors are functioning?
Last Answer : What kind? Flux?
Description : Can I charge these capacitors with a 6v lantern battery?
Last Answer : Never mind, my brain wasn’t working.
Description : How many types of capacitors and what are they ?
Last Answer : There are three types of capacitors. For example: 1. Fixed capacitor. 2. Adjustable capacitor. 3. Variable capacitor.
Description : Identical dielectric slabs are inserted into two identical capacitors `A` and `B`. These capacitors and a battery are connected as shown in figure. No
Last Answer : Identical dielectric slabs are inserted into two identical capacitors `A` and `B`. These capacitors ... , which fully appears as heat in the circuit
Description : What is the use of capacitors in fire alarm circuit?
Last Answer : Fire alarm system may be having some electronic devices andcards, in which some capacitors are used. Capacitors are part ofany electronic cards.
Description : What is Law of capacitors in parallel?
Last Answer : Need answer
Description : In order to improve the power factor ___ device is employed in the substation a) Synchronous condenser b) Synchronous reactor c) Series Capacitors d) None of the above
Last Answer : Ans: A
Description : In the schematic of the electrical circuit shown in the illustration, what is the value of the total capacitance, when compared to the value of equal individual capacitors? EL-0038 A. Equal B. Half C. Double D. Squared
Description : Regarding the illustrated electrical schematic, 'S1-P', 'S1-Q', and 'S1-R' represent ____________. EL-0016 A. capacitors B. normally-closed contacts C. normally-open contacts D. normally-closed pushbutton switches
Description : When replacing component 'B' of the circuit shown in the illustration, it is important to know that ____________. EL-0081 A. it is polarity sensitive and must be inserted as indicated on its ... provide the capacitor's initial charge D. it must match the circuit voltage and component 'C' wattage
Last Answer : Answer: D
Description : A switchboard ammeter indicates a reading slightly above 'zero' when the leads are disconnected, this is caused by _____________. A. mechanical misalignment of the meter pointer B. a poor ground for the meter case C. static electricity in the air D. capacitors inside the meter storing charges
Last Answer : Answer: A
Description : When working on electrical circuits containing large capacitors, in addition to deenergizing the circuit, which of the listed precautions should also be taken? A. Keep all radio equipment ... capacitor insulation resistance. C. Ground the capacitor terminals. D. Check capacitor circuit polarity.
Description : Capacitors can be used in electric distribution systems to improve power factor. This is accomplished by seesawing energy between the capacitor and the _____________. A. generator B. inductive loads C. resistive loads D. all of the above
Last Answer : Answer: B
Description : Which of the devices listed is indicated by the symbols lettered 'A' to 'F', shown in the illustration? EL-0016 A. Diodes B. Linear inductors C. Capacitors D. Transistors
Description : As shown in the illustration, 'H1' and 'H2' are ___________. EL-0058 A. fixed capacitors B. variable capacitors C. contacts, closed when the circuit is energized D. contacts, open when the circuit is energized
Description : Capacitors are used on the output of the power supply in today's consoles to _____________. A. filter out 'ripple' B. prevent overloads C. act as a permanent load D. decrease the average value of the output voltage
Description : Alternating current circuits develop resistance, inductance, and capacitance. The capacitance of individual capacitors is expressed in _____________. A. ohms B. mhos C. henrys D. farads
Description : When changing out component 'B' of the circuit shown in the illustration, it is important to know that ____________. EL-0081 A. it is polarity sensitive and must be inserted as indicated on its ... provide the capacitor's initial charge D. it must match the circuit voltage and component 'C' wattage
Description : Why The Capacitors Works On Ac Only?
Last Answer : Generally capacitor gives infinite resistance to dc components(i.e., block the dc components). it allows the ac components to pass through.
Description : Why shaded-pole single phase induction motor does not need any special starting technique like capacitors and auxiliary winding etc.
Last Answer : Because it is inherently self started motor. The construction of the poles is such that they give a sweep to the magnetic flux and motor starts rotating.
Description : Is there any relation between the capacitances of two capacitors used in two value capacitor start capacitor run motor?
Last Answer : Ans: Starting capacitor has about 10 – 15 times high capacity than the value of running capacitor.
Description : What is the proper procedure for suppressing electrical noise in a mobile station? A. Apply shielding and filtering where necessary B. Insulate a all plain sheet metal surfaces from each other C. ... -static spray liberally to all nonmetallic D. Install filter capacitors in series with all dc wiring
Last Answer : A. Apply shielding and filtering where necessary
Description : Heat flux through several resistances in series in analogous to the current flowing through several (A) Resistances in parallel (B) Capacitors in series (C) Resistances in series (D) None of these
Last Answer : (C) Resistances in series
Description : What is the purpose of having input and output capacitors in three terminal IC regulators?
Last Answer : A capacitor connected between the input terminal and ground cancels the inductive effects due to long distribution leads. The output capacitor improves the transient response.
Description : What are the two common methods for obtaining integrated capacitors?
Last Answer : • Monolithic junction capacitor • Thin-flim capacitor
Description : If the capacitors are connected in parallel, then the potential difference across each capacitor is A. same B. different C. zero D. infinite
Last Answer : same
Description : Combined capacitance is equal to the A. sum of all capacitance of capacitors B. product of all the capacitance C. difference between the capacitors D. average capacitance of capacitors
Last Answer : sum of all capacitance of capacitors
Description : Why the capacitors work on ac only?
Last Answer : Generally capacitor gives infinite resistance to dc components (i.e., block the dc components). It allows the ac components to pass through.