Description : What is the most commonly used filter in use today?
Last Answer : LC capacitor-input filter.
Description : __________ is the most commonly used 'filter aid'. (A) Diatomaceous earth (B) Fuller's earth (C) Vermiculite (D) Semi-plastic clay
Last Answer : (A) Diatomaceous earth
Description : Name the commonly used filter aids.
Last Answer : Commonly used filter aids are as follows: 1) Cellulose 2) Asbestos 3) Carbon 4) Diatomaceous earth 5) Perlite
Description : What type filter is used to block the passage of current for a narrow band of frequencies, while allowing current to flow at all frequencies above or below this band?
Last Answer : . Band-reject.
Description : What type filter is used to allow a narrow band of frequencies to pass through a circuit and attenuate all other frequencies above or below the desired band?
Last Answer : Bandpass.
Description : What term is used to describe the frequency at which the filter circuit changes from the point of rejecting the unwanted frequencies to the point of passing the desired frequencies?
Last Answer : Frequency cutoff (fco).
Description : What is the filter called that passes low frequencies but rejects or attenuates high frequencies?
Last Answer : Low-pass filter, high-frequency discriminator or high-frequency attenuator.
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 are the two main disadvantages of an LC capacitor filter?
Last Answer : Cost and size of the inductor.
Description : When is a second RC filter stage used?
Last Answer : When ripple must be held at an absolute minimum.
Description : Why is the use of large value capacitors in filter circuits discouraged?
Last Answer : Expense
Description : Is a full-wave rectifier output easier to filter than that of a half-wave rectifier?
Last Answer : Yes.
Description : What determines the rate of discharge of the capacitor in a filter circuit?
Last Answer : Value of capacitance and load resistance.
Description : Does a filter circuit increase or decrease the average output voltage?
Last Answer : A filter circuit increases the average output voltage
Description : In a capacitor filter, is the capacitor in series or in parallel with the load?
Last Answer : Parallel.
Description : What is the most basic type of filter?
Last Answer : The capacitor filter.
Description : What is the purpose of the filter section?
Last Answer : To change pulsating dc to pure dc.
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 : When ripple must be held at an absolute minimum
Description : Is an RC filter used when a large current or a small current demand is required?
Last Answer : Small.
Description : If the inductance of a choke-input filter is increased, will the output ripple voltage amplitude (Er) increase or decrease?
Last Answer : Decrease.
Description : What is the value usually chosen for a filter choke?
Last Answer : 1 to 20 henries.
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
Last Answer : Increase.
Description : Is better filtering achieved at a high frequency or at a low frequency at the input of the filter?
Last Answer : High
Description : In a capacitor filter, is the capacitor in series or parallel with the load?
Last Answer : Capacitor.
Description : What is the function of a crystal filter in a receiver?
Last Answer : It is used to achieve maximum selectivity.
Description : A mode filter is a device that attenuates specific modes propagating in the core of an optical fiber. What mode propagating along single mode fibers do mode filters eliminate?
Last Answer : Second-order mode.
Description : How does a low-pass filter detect pdm?
Last Answer : By averaging the value of the pulses over the period of the pulse-repetition rate.
Description : which components act as the filter network in the diode detector?
Last Answer : C1 and R1.
Description : What type of modulator is most commonly used in modern radar systems?
Last Answer : Line-pulsed.
Description : What are the three units of measure most commonly used when referring to af power measurements?
Last Answer : DB, dBm, and vu.
Description : What is the commonly used figure of merit for a power supply?
Last Answer : Percent of regulator.
Description : Why is the pi mode the most commonly used magnetron mode of operation
Last Answer : Greater power output.
Description : A device which supplies a voltage is commonly referred to by what name?
Last Answer : A voltage source.
Description : What are the three most commonly used tape reeling systems?
Last Answer : a. Take-up control. b. Two-motor reeling. c. Tape buffering.
Description : What materials are commonly used as cushions between cable insulation and metallic armor?
Last Answer : Jute and Asphalt coverings.
Description : What are some commonly used Linux applications today?
Last Answer : There are many , the most common are JAVA, CAD/CAM, DNS, MP3, FTP. You can see more at www.linux.org.
Description : The three essential types of fiber commonly used today except: ∙ A. Plastic core and cladding ∙ B. Plastic core and glass cladding ∙ C. Glass core and glass cladding (SCS) ∙ D. Glass core and plastic cladding (PCS)
Last Answer : B. Plastic core and glass cladding
Description : What are the most commonly used input devices today? a. Keyboard b. Mouse c. All of the above d. None of the above
Last Answer : c. All of the above
Description : List the two common types of waveguides in use today.
Last Answer : Cylindrical and rectangular.
Description : What are the two types of coaxial lines in use today?
Last Answer : Air coaxial (rigid) and solid coaxial (flexible).
Description : List the five types of transmission lines in use today.
Last Answer : Parallel two-wire, twisted pair, shielded pair, coaxial line and waveguide.