Description : What does the voltage rating of a fuse indicate?
Last Answer : The ability of the fuse to quickly extinguish the arc after the fuse element melts and the maximum voltage that cannot jump across the gap of the fuse after the fuse opens.
Description : You have just checked a 1/500-ampere fuse with an ohmmeter and find it is open. Checking the replacement fuse shows the replacement fuse is open also. Why would the replacement fuse indicate open?
Last Answer : The ohmmeter causes more than 1/500 ampere through the fuse when you check the fuse, thus it opens the fuse.
Description : What does the wattage rating of a resistor indicate?
Last Answer : Its ability to dissipate heat
Description : Using a fuse whose rating is higher than necessary ________. A. endangers the apparatus it is supposed to protect B. reduces the possibility of short circuits C. increases the efficiency of the equipment by allowing more current to be used D. wastes money because they are more expensive
Last Answer : Answer: A
Description : 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
Description : What are the voltage and current ratings for a fuse designated
Last Answer : a. 125 volts or less, 1/16 ampere b. 250 volts or less, .15 ampere
Description : What are the voltage, current, and time delay ratings for a fuse with the designation
Last Answer : a. 125 volts or less, 1.5 amperes, delay b. 250 volts or less, 1/8 ampere standard
Description : List the four factors you should use to select wire for a specified current rating.
Last Answer : Conductor size, the material it is made of the location of the wiren in a circuit, and the type of insulation used.
Description : What is the current rating of a switch?
Last Answer : The maximum current a switch is designed to carry.
Description : What is the fuse rating in HT side of 11.4kv500kva transformer?
Last Answer : You need to specify the phase. I assume it is 3 phase system.Then the HT current is 30.3 amps
Description : Which of the following precautions should be taken when a blown fuse, rated at 10 amperes, is replaced? A. Short out the fuse before removing it from the circuit. B. Use needle-nose pliers to ... D. Fuses of 10 ampere rating and less are virtually harmless when energized and may be handled freely.
Last Answer : Answer: C
Description : In the illustration if BRANCH NO. 1 is a lighting circuit for crew's berthing, Federal Regulations (46 CFR) require the maximum fuse rating for that branch to be _________. EL-0013 A. 80% of the connected load B. 15 amps C. 20 amps D. 30 amps
Description : In the illustration if BRANCH NO. 1 is a lighting circuit for crew's berthing, 46 CFR requires the maximum fuse rating for that branch to be _________. EL-0013 A. 15 amps B. 80% of the connected load C. 20 amps D. 30 amps
Description : 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%
Description : When replacing fuses, always make sure _______________. A. to stand on a rubber mat and use rubber gloves B. to use insulated pliers or screwdriver C. the fuse clips are straight, tight, and in good contact D. to increase the fuse rating 10% to guard against 'nuisance blowing'
Description : What is the rating of generator PT fuse?
Last Answer : 24 kV, 3.15 Amps.
Description : The rating of fuse wire is always expressed in (a) volts (b) amperes (c) ampere-volt (d) ampere-hours
Last Answer : The rating of fuse wire is always expressed in Amperes
Last Answer : The fuse rating is expressed in terms of current.
Description : In applying Kirchhoff’s current law, what does the polarity of the current indicate?
Last Answer : Whether the current is entering the junction (+) or leaving the junction (-).
Description : If a voltage tester is being used to check for defective fuses in the circuit, shown in the illustration, which of the readings will indicate that fuse #2 is open? EL-0062 A. C-B full voltage B. A-D full voltage C. A-D no voltage D. C-B no voltage
Description : Prime importance of star rating is ……………….. to consumer about how the energy efficient each product is. A) Educate. C) Inform B) Indicate. D) Educate and inform.
Last Answer : Educate and inform
Description : If the fuse shown on the schematic (figure 3-10) opens, what lights will operate?
Last Answer : Only the brake lights.
Description : List the safety precautions to be observed when replacing a fuse.
Last Answer : Be sure the power is off in the circuit and the circuit is discharged before replacing a fuse. Use an identical replacement fuse if possible. Remove any corrosion from the fuseholders before replacing the fuses.
Description : What two things should you check before replacing a fuse?
Last Answer : Check for the proper type of replacement fuse and proper fit.
Description : How could you check a 1/500-ampere fuse with an ohmmeter?
Last Answer : Use a resistor in series with the fuse when you check it with the ohmmeter.
Description : You have just checked a fuse with an ohmmeter and find that the fuse is shorted. What should you
Last Answer : Put it back in the circuit. A good fuse will have zero ohms of resistance.
Description : What are three methods for determining if a fuse is open?
Last Answer : Visual inspection, indicators, and using a meter
Description : What is the new military designation for a fuse with the old military designation F05A20ROB?
Last Answer : F05B32V20A.
Description : Give an example of a device you could protect with each type of time delay fuse.
Last Answer : Delay-Motors, solenoids, or transformers. Standard Automobiles, lighting or electrical power circuits. Fast-Delicate instruments or semiconductor devices.
Description : The floppy disks you are using have a rating of 96 TPI. What does this mean?
Last Answer : The disks can hold 96 tracks per inch.
Description : . If the power distribution system shown in figure 2-22 uses selective tripping, what is the time delay rating for each of the circuit breakers shown?
Last Answer : CB1-long time delay; CB2, CB3-short time delay; CB4 through
Description : What is the voltage rating of a switch?
Last Answer : The maximum voltage allowable in the circuit in which the switch is installed.
Description : What do the dotted lines connecting C1, C2, C5, and C6 indicate?
Last Answer : The dotted lines indicate that these capacitors are "ganged" and are tuned together with a single control.
Description : What does the number "2" (before the letter "N") indicate in the JAN marking scheme?
Last Answer : the number of junctions in the device, which in this case indicates a transistor.
Description : Does 1:5 indicate a step-up or step-down transformer?
Last Answer : Step up.
Last Answer : Step up
Description : In a TDX system with standard synchro connections, the TX rotor is at 120º and the TDX rotor is at 40º. What position will the TR indicate?
Last Answer : . 80º.
Description : In the add mode, what does the output of C2 indicate?
Last Answer : . MSD of the sum.
Description : Does low ripple voltage indicate good or bad filtering?
Last Answer : Good.
Description : What does the letter "N" indicate in the semiconductor identification system?
Last Answer : A semiconductor.
Description : What does each generation of computer systems indicate?
Last Answer : Significant change in computer design.
Description : While measuring frequency response, as the signal generator approaches the lowest and highest frequency the recorder can effectively record, the VTVM reading drops to less than - 3 dB. What does this indicate?
Last Answer : The upper and lower limits of the frequency response specification for that tape recorder.
Description : What does the color red indicate on a tty patch panel?
Last Answer : It handles classified information.
Description : Why will a meter indicate more voltage at the battery terminal when the battery is out of a circuit than when the battery is in a circuit?
Last Answer : The internal (source) resistance of the battery will drop some of the voltage
Description : What does a lighted LED indicate on a logic comparator?
Last Answer : A difference in logic states between the reference IC and the IC under test.
Description : If the insulation of a conductor was being measured in figure1-51 (A), would the reading indicate a good insulation?
Last Answer : Yes.
Description : In a galvanometer, what two methods are used to indicate the amount of coil rotation?
Last Answer : The pointer arrangement and the light and mirror arrangement.
Last Answer : he pointer arrangement and the light and mirror arrangement.
Description : What does the term single phase indicate?
Last Answer : One voltage (one output).