Description : What are the two types of circuit protection devices?
Last Answer : Fuses and circuit breakers
Description : How are circuits protections devices connected to the circuit they are intended to protect and why are they connected in this way?
Last Answer : In series, so total current will be stopped when the device opens.
Description : What are three reasons circuit control is needed?
Last Answer : To remove power from a malfunctioning device; to remove power from a device you wish to work on and restore power when the work is completed; to turn devices on and off as the device is needed; to select the function or circuit desired within a device.
Description : What two basic types of magnetic devices are used as error detectors?
Last Answer : E-transformer and control transformers.
Description : What are the three types of circuit breaker trip elements?
Last Answer : Thermal, magnetic, and thermal-magnetic
Description : What are the three networks used for frequency determining devices?
Last Answer : RC, LC, and crystal
Description : What are the three types of control synchros?
Last Answer : CX, CT, and CDX.
Description : What does a tone control circuit in a receiver do to the audio signal?
Last Answer : It controls the amount of bass and treble response.
Description : What type of switch should be used to control a circuit that requires a temporary actuation signal?
Last Answer : A momentary switch.
Description : What types of diagrams are the most convenient from which to learn the basic Functions of a circuit?
Last Answer : Block or single-line diagram.
Description : Ferrite devices are useful in microwave applications because they possess what properties?
Last Answer : Magnetic properties and high resistance
Description : What is the name given to a variety of rotary electromechanical, position sensing devices?
Last Answer : The synchro.
Description : What are the two most common semiconductor materials used in electronic and electro-optic devices?
Last Answer : Silicon and gallium arsenide.
Description : Early analog computers were what type of devices?
Last Answer : Mechanical or electromechanical.
Description : What is the primary advantage of bulk-effect devices over normal pn-junction semiconductors?
Last Answer : Larger microwave power outputs.
Description : Computer-aided layout is used to prepare _______ devices.
Last Answer : Complex.
Description : Why are disk storage devices popular?
Last Answer : Largely because of their direct access capabilities.
Last Answer : Largely because of their direct access capabilities
Description : Whenever data is transferred between devices, it involves the exchange of prearranged signals; what is this process called?
Last Answer : Handshaking.
Description : Why are digital multimeters well suited for testing sensitive devices?
Last Answer : The current flow through the component is limited to 1 milliamp.
Description : Why do electronic devices use amplifiers?
Last Answer : To amplify the input signal to a usable level.
Description : Why are shaded-pole motors used to drive only very small devices?
Last Answer : They have very weak starting torques.
Description : What are the three requirements necessary for oscillations to exist in a circuit?
Last Answer : Amplification, regenerative feedback, and frequency-determining device.
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 : A series circuit consisting of three resistors has a current of 3 amps. If R1 = 20 ohms, R2= 60 ohms, and R 3 = 80 ohms, what is the (a) total resistance and (b) source voltage of the circuit?
Last Answer : (a) 160 ohms. (b) 480 ohms
Description : What are the three time delay ratings for circuit breakers?
Last Answer : Instantaneous, short time delay, and long time delay.
Description : What are the three conditions that require circuit protection?
Last Answer : A direct short, excessive current and excessive heat.
Description : The three devices which make up the circuit shown in the illustration are ____________. EL-0087 A. flip-flops B. exclusive 'OR' gates C. summing op amps D. function generators
Last Answer : Answer: A
Description : Which of the two types of automatic gain control, agc or iagc, is most effective in radar use for the Navy?
Last Answer : IAGC.
Description : What are the four major types of instructions in the control section?
Last Answer : Transfer, arithmetic, logic, and control.
Description : The control electronics component of a floppy or hard disk drive performs what three main functions?
Last Answer : a. Spins the disk at the correct speed. b. Moves the heads across the recording surface. c. Tells the write/read heads when to write data and when to read it.
Description : Which of the two main types of rotors can have either a single winding or three Y-connected windings?
Last Answer : The drum or wound rotor.
Description : What are the three more common types of irregular variations in the ionosphere?
Last Answer : Sporadic E, sudden disturbances, and ionospheric storms.
Description : What three types of storage elements most often are used in modulators?
Last Answer : Capacitor, artificial transmission line, or pulse-forming network.
Description : What are the three types of line losses associated with transmission lines?
Last Answer : Copper, dielectric, and radiation.
Description : What are the three basic LED types?
Last Answer : Surface-emitting LEDs (SLEDs), edge-emitting LEDs (ELEDs)
Description : List the three types of cable designs being considered by the Navy.
Last Answer : Optical fiber cable component (OFCC), stranded, and ribbon cables designs.
Description : What are the three most common types of packages?
Last Answer : TO, flat pack, DIP.
Description : What are the three types of subatomic particles, and what are their charges?
Last Answer : Electrons-negative, protons-positive, and neutrons-neutral
Description : If magnetic tape is stored in areas with temperature and humidity extremes, what are three types of tape damage that may occur?
Last Answer : Oxide shedding, layer-to-layer sticking, and tape deformation.
Description : State three types of power loss in an inductor.
Last Answer : Copper loss; hysteresis loss; eddy-current loss.
Description : What are the three types of lead-sheathed cables?
Last Answer : Alloy lead, pure lead, and reinforced lead.
Description : What are three types of nonmetallic insulating materials that can be used in a high-temperature environments?
Last Answer : FEP, extruded polytetrafluoroethylene, and silicone rubber.
Description : In digital magnetic tape recording, the series of recorded digital pulses can represent what three types of data?
Last Answer : a. Data used by digital computers. b. Pulsed squarewave signals. c. Digitized analog waveforms.
Description : What are the three basic types of ac motors?
Last Answer : Series, synchronous, induction.
Description : Which type of splice is used to splice a lighting fixture to a branch circuit?
Last Answer : Fixture joint.
Description : What type circuit is used to produce square or rectangular waves?
Last Answer : Multivibrator.
Description : . What characteristic of an RL circuit allows it to act as an integrator?
Last Answer : The ability of the inductor to oppose a change in current.
Description : What are the requirements for an integration circuit?
Last Answer : The time constant is long and the output is taken across the capacitor in an RC circuit.