Description : What are three means of producing light
Last Answer : Mechanical, electrical, and chemical.
Description : Why is America falling behind in producing alternative methods of energy?
Last Answer : Do you not mean “alternative”?
Description : 7. List two methods of producing magnetic fields. -Physics-10
Last Answer : Following are the methods of producing magnetic fields: By using a permanent magnet we can produce magnetic field and it can be visualized by spreading iron fillings on a white paper and keeping a ... conductors such as solenoid and circular loop can be used to see the presence of magnetic field.
Description : What type of scientist develops methods of producing biofuels?
Last Answer : I think that would be a biochemist
Description : List six types of fiber mismatches.
Last Answer : Core diameter mismatch, cladding diameter mismatch, core ellipticity, core and cladding concentricity differences, NA mismatch, and refractive index profile differences.
Description : What six types of environmental damage can occur to tapes in storage when the ideal temperature and humidity ranges are exceeded?
Last Answer : Tape deformation, oxide shedding, head-to-tape sticking, layer to-layer sticking, dirt build-up, and excessive tape and head wear.
Description : List the six safety precautions for the use of voltmeters.
Last Answer : a. Always connect a voltmeter in parallel. b. Always start with the highest range. c. Deenergize and discharge the circuit before connecting or disconnecting the voltmeter. d. ... to measure ac voltage. f. Observe the general safety precautions of electric and electronic devices.
Description : List the six safety precautions for the use of ammeters
Description : Energy can be inserted or removed from a cavity by what three methods?
Last Answer : Probes, loops, and slots.
Description : What two methods are used to compensate for the problems that cause low gain in an rf amplifier?
Last Answer : . RF transformers are used and the transistor is neutralized.
Description : Besides eliminating the emitter-base battery, what other advantages can different biasing methods offer?
Last Answer : Compensation for slight variations in transistor characteristics and changes in transistor conduction because of temperature variations.
Description : What are the two basic methods of scanning?
Last Answer : Mechanical and electronic.
Description : What are the two methods used for feedback coupling?
Last Answer : Inductive and capacitive.
Description : What are the two methods used by fiber manufacturers to fabricate multimode and single mode glass fibers?
Last Answer : Vapor phase oxidation and direct-melt process.
Description : When, if at all, should the heat-and-shake or the heat-and pull methods of solder removal be used?
Last Answer : These methods should not be used.
Description : What three methods are used to remove protective material?
Last Answer : Chemical, mechanical, and thermal.
Description : What two methods are used to couple energy into and out of magnetrons?
Last Answer : Loops and slots.
Description : What methods are used to prevent unwanted component interaction?
Last Answer : Ground planes, shielding, and component placement.
Description : Name the three methods of interconnecting components in multilayer printed circuit boards.
Last Answer : Clearance hole, plated-through hole, and layer build-up
Description : What are the three most common methods of interconnections?
Last Answer : Conventional printed circuit boards, multilayer printed circuit boards and modular assemblies.
Description : What two methods of manufacture are being used to eliminate bonding wires?
Last Answer : Flip-chip, beam lead
Description : What methods are used to deposit thin-film components on a substrate?
Last Answer : . Evaporation and cathode sputtering.
Description : What are the three most popular methods for encoding digital data onto magnetic disks?
Last Answer : a. Frequency modulation (FM). b. Modified frequency modulation (MFM). c. Run length limited (RLL).
Description : Why is radiotelephone one of the most useful methods of military communications?
Last Answer : It is direct, convenient and easy to use.
Description : What are the two emi transmission methods?
Last Answer : . Conduction and radiation.
Description : Two methods describe how light propagates along an optical fiber. These methods define two theories of light propagation. What do we call these two theories?
Last Answer : The ray theory and the mode theory.
Description : Which of the eight methods for encoding digital data onto magnetic tape is most widely used because it’s accurate, simple, and reliable?
Last Answer : Non-return-to-zero (NRZ) encoding.
Description : What are three methods for determining if a fuse is open?
Last Answer : Visual inspection, indicators, and using a meter
Description : What are two methods used to damp a meter movement?
Last Answer : As the coil moves through the field of the permanent magnet, a current is induced in the coil opposing the movement of the coil; and a vane can be attached to the coil and placed in the airtight chamber so that the movement of the vane opposes the movement of the coil.
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 : Name two methods of oscillator keying.
Last Answer : Plate keying and cathode keying.
Description : What are four methods of coupling amplifier stages?
Last Answer : Direct, RC, impedance, and transformer coupling.
Description : What are the two methods of connecting the outputs from a three-phase alternator to the load?
Last Answer : Wye and Delta.
Description : What kind of effect is referred to a varying light producing a varying voltage output of a detector? A. Current effect B. Voltage effect C. Resistive effect D. Photovoltaic effect
Last Answer : D. Photovoltaic effect
Description : The induced voltage will oppose the flux producing it. State True/False. a) True b) False
Last Answer : a) True
Description : Traditionally, _____ methods of switching have been important. A) four B) three C) five D) six
Last Answer : three
Description : List any SIX methods of energy conservation in boilers.
Last Answer : List any six methods of energy conservation in boilers Following methods can conserve energy in boilers 1) Reduction radiation and convention losses 2) Waste heat recovery for heating to ... pressure and temperature 8) Periodic energy audit. Periodic preventive maintenance of all components.
Description : If a voltage (positive or negative) is measured on the "1" output of a flip-flop, what state is it in?
Last Answer : SET state.
Description : What would be the output of a negative clamper with a bias potential of −5 volts and an input voltage swing from +50 to −50 volts?
Last Answer : -5 volts.
Description : What is the filter called in which the low frequencies do not produce a useful voltage?
Last Answer : High-pass filter, low-frequency discriminator, or low-frequency attenuator.
Description : What is the name of the device that provides an increase in current, voltage, or power of a signal without appreciably altering the original signal?
Last Answer : Amplifier.
Description : What is the relationship between the polarity of the voltage applied to the PNP transistor and that applied to the NPN transistor?
Last Answer : The polarity of voltage applied to the PNP transistor is opposite of that applied to the NPN
Description : To properly bias an NPN transistor, what polarity voltage is applied to the collector, and what is its relationship to the base voltage?
Last Answer : Positive, more positive.
Description : The leads to the primary and the high-voltage secondary windings of a power transformer usually are of what color?
Last Answer : Primary leads-black; secondary leads red.
Description : What causes a voltage to be developed across the secondary winding of a transformer?
Last Answer : The magnetic lines generated by the current in the primary cut
Description : When taking a voltage measurement, which lead of the voltmeter should you connect to the circuit first?
Last Answer : Ground.
Description : On what range should you set the voltmeter prior to taking a voltage measurement?
Last Answer : Highest.
Description : Which quantity (voltage or current) determines the intensity of an electrical shock?
Last Answer : Current.
Description : What is the purpose of "stickoff voltage"?
Last Answer : It is used in synchro systems to prevent false synchronizations.