Description : What are the basic parts of a capacitor?
Last Answer : Two pieces of conducting material separated by an insulator.
Description : What are the four basic parts of a magnetic tape recorder's tape transport system?
Last Answer : a. Tape reeling system. b. Tape speed control system. c. Electronic subsystem. d. Basic enclosure.
Description : What is the relative length of the time constant for the diode capacitor combination in a damper (long or short)?
Last Answer : Short time constant.
Description : How does a capacitor and an inductor react to (a) low frequency and (b) high frequency?
Last Answer : At low-frequency, a capacitor acts as an open and an inductor acts as a short. At high-frequency, a capacitor acts as a short and an inductor acts as an open.
Description : What is the term for the number of times per second that tank circuit energy is either stored in the inductor or capacitor?
Last Answer : Natural frequency or resonant frequency (f r).
Description : When the capacitor is completely discharged, where is the energy of the tank circuit stored?
Last Answer : Inductor magnetic field
Description : If the inductor and capacitor values are increased, what happens to the resonant frequency?
Last Answer : Decreases.
Description : In an a.c. circuit that contains both an inductor and a capacitor, what term is used for the difference between the individual reactances?
Last Answer : Resultant reactance.
Description : What is the term used to refer to the losses which can be traced to the dielectric of a capacitor?
Last Answer : Power losses.
Description : What is the purpose of the synchro capacitor?
Last Answer : To improve overall synchro system accuracy by reducing stator currents.
Description : What are the two main disadvantages of an LC capacitor filter?
Last Answer : Cost and size of the inductor.
Description : What determines the rate of discharge of the capacitor in a filter circuit?
Last Answer : Value of capacitance and load resistance.
Description : In a capacitor filter, is the capacitor in series or in parallel with the load?
Last Answer : Parallel.
Description : If you increase the value of the capacitor, will the XC increase or decrease? Why?
Last Answer : It will decrease. Capacitance is inversely proportional to:
Description : In an LC choke-input filter, what prevents the rapid charging of the capacitor?
Last Answer : The CEMF of the inductor
Description : . What are the two main disadvantages of an LC capacitor filter?
Last Answer : Cost of the inductor and size of the inductor.
Last Answer : Counter electro-motive force of the inductor.
Description : . What determines the rate of discharge of the capacitor in a filter circuit?
Last Answer : Value of capacitance and load resistance
Description : In a capacitor filter, is the capacitor in series or parallel with the load?
Description : If you increase the value of the capacitor will the XC increase or decrease? Why?
Last Answer : Decrease-Capacitance is inversely proportional to XC.
Description : In a circuit using grid-leak biasing, the coupling capacitor (Cc) chargcharge path?
Last Answer : rkg, the cathode to grid resistance.
Description : What is the term for the opposition that a capacitor presents to ac?
Last Answer : Capacitive reactance.
Description : What effect does the capacitor have on a changing voltage?
Last Answer : The capacitor opposes any change in voltage.
Description : What is the discharge rate for the capacitor in a pcm converter?
Last Answer : It will discharge to one-half its value between pulses.
Description : What is the time constant of the resistor and capacitor in a peak detector for pam?
Last Answer : At least 10 times the interpulse period.
Description : A circuit is to be designed in which a capacitor must charge to 40 percent of the maximum charging voltage in 200 microseconds. The resistor to be used has a resistance of 40,000 ohms. What size capacitor must be used?
Last Answer : 0.1 microfarads 40% from the graph = 0.5
Description : What is the RC time constant of a series RC circuit that contains a 12-megohm resistor and a 12-microfarad capacitor?
Last Answer : 144 seconds (t=R x C)
Description : What is the voltage drop across the resistor in an RC charging circuit when the charge on the capacitor is equal to the battery voltage?
Last Answer : Zero.
Description : At what instant does the greatest voltage appear across the resistor in a series RC circuit when the capacitor is charging?
Last Answer : At the instant of the initiation of the action.
Description : state what happens to the electrons in a capacitor circuit when (a) the capacitor is charging and (b) the capacitor is discharging.
Last Answer : a. When the capacitor is charging, electrons accumulate on the negative plate and leave the positive plate until the charge on the capacitor is equal to the battery voltage. b. When the ... the negatively charged plate to the positively charged plate until the charge on each plate is neutral.
Description : a. Define the term "working voltage" of a capacitor. b. What should be the working voltage of a capacitor in a circuit that is operating at 600 volts?
Last Answer : a. It is the maximum voltage the capacitor can work without risk of damage. b. 900 volts.
Description : Name two types of power losses associated with a capacitor.
Last Answer : a. Hysteresis b. Dielectric leakage
Description : State three factors that affect the capacitance of a capacitor.
Last Answer : a. The area of the plates. b. The distance between the plates. c. The dielectric constant of the material between the plates.
Description : In the illustrated circuit, the amplifier is connected in what basic configuration? EL-0045 A. common emitter B. common collector C. darlington paired, capacitor coupled D. common base
Last Answer : Answer: D
Description : State the functions of following essential parts of electrolytic capacitor. 1. Aluminium foil 2. Oxide film 3. Spacers 4. Aluminium container
Last Answer : 1. Aluminium Foil – It serves as a positive electrode called anode 2. Oxide film – It acts as a dielectric medium. 3. Spacer- It is used to provide separation and hold the electrolyte. 4. Aluminium container- It serves as a negative electrode called cathode.
Description : What are the basic requirements for any splice or terminal connection?
Last Answer : The connection must be both mechanically and electrically as strong as the conductor or device with which it is used
Description : The magic-T is composed of what two basic types of T junctions?
Last Answer : E-type and H-type.
Description : What are the two basic types of T junctions?
Description : What are the three basic characteristics of sound
Last Answer : Pitch, intensity, and quality.
Description : What are the three basic requirements for sound?
Last Answer : A source, medium, and detector (receiver).
Description : In the basic transistor amplifier discussed earlier, what is the relationship between the polarity of the input and output signals?
Last Answer : The signals are opposite in polarity or 180 degrees out of phase with each other.
Description : Name the two basic elements of the SCLSIS program
Last Answer : Validation and updating
Description : What is the basic principle of a magnetic amplifier?
Last Answer : change in inductance in a series LR circuit causes a change in true power.
Description : The two basic types of voltage regulators are ___ and ___
Last Answer : Series and shunt.
Description : What is the most basic type of filter?
Last Answer : The capacitor filter.
Description : What are the four basic sections of a power supply?
Last Answer : Transformer, rectifier, filter, regulator.
Description : What the three basic components make up the typical magnetic amplifier?
Last Answer : Two saturable reactors and a transformer.
Description : What is the basic difference between the primaries of ac and dc rate generators?
Last Answer : The method of primary excitation (ac and permanent magnet).
Description : What two basic types of magnetic devices are used as error detectors?
Last Answer : E-transformer and control transformers.