Description : What is the name given to a variety of rotary electromechanical, position sensing devices?
Last Answer : The synchro.
Description : How do electromechanical computers differ from the mechanical computers?
Last Answer : Electromechanical computers use electrical components to perform some of the calculations.
Description : Hard disk drive transports contain the electromechanical parts that perform what three functions?
Last Answer : a. Rotates the hard disk platters. b. Writes data to and reads data from the disk platters
Description : What part of a floppy disk drive transport contains the circuitry which controls the electromechanical parts of the transport?
Last Answer : Drive electronics circuit board.
Description : What is a major disadvantage of a carbon microphone?
Last Answer : Background hiss resulting from random changes in the resistance between individual carbon granules.
Description : Which of the following does not rely on the magnetic effect of current for its working? (a) Fan (b) Telephone receiver (c) Carbon microphone (d) Dynamo
Last Answer : Ans:(c)
Description : What gyro characteristic provides the basis of the operation of a rate gyro?
Last Answer : Precession.
Description : What purpose does a microphone perform in an AM transmitter?
Last Answer : It converts audio (sound) into electrical energy.
Description : What is the difference between a dynamic microphone and a magnetic microphone?
Last Answer : A dynamic microphone has a moving coil and the magnetic microphone has a moving armature.
Description : What property of a crystalline material is used in a crystal microphone?
Last Answer : The piezoelectric effect.
Description : What is a microphone?
Last Answer : An energy converter that changes sound energy into electrical energy.
Description : What is the difference between an electronic and an electromechanical computer ?
Last Answer : Electronic computer 1. The computer that is invented depending on the electronic method is called electronic computer. 2. ENIAC is the first electronic computer. 3. Electronic computers were first invented ... amount of information can be contained. . Made up of a combination of different valves.
Description : Which technology is used in a CDROM Drive ? 1) Mechanical 2) Electromechanical 3) Optical 4) Fibre optical
Last Answer : 3) Optical
Description : Compare electromechanical switching system with electronic switching system.
Last Answer : Ans:
Description : A compact disc (CD) is a data storage system of the type : (1) Magnetic (2) Optical (3) Electrical (4) Electromechanical
Last Answer : Optical
Description : Should a tenor singer use a special type of microphone?
Last Answer : A flat frequency response can be ideal, as well as a robust capsule. Some suggestions are Microtech Gefell M930 or M940. Also try Schoeps, DPA or Neumanns products.
Description : What is the effect on magnetron operation if the magnetic field strength is too high?
Last Answer : The magnetron will not oscillate.
Description : Which of the following uses the attractive force on soft iron? (a) Carbon microphone (b) Telephone receiver (c) Simple motor (d) Dynamo
Last Answer : Ans:(b)
Description : What waveform is the basis of all complex waveforms?
Last Answer : The sine wave.
Description : The field arrangements in waveguides are divided into what two categories to describe the various modes of operation?
Last Answer : Transverse electric (TE) and transverse magnetic (TM).
Description : What amplifier class of operation is the most inefficient but has the least distortion?
Last Answer : Class A.
Description : What two primary items determine the class of operation of an amplifier?
Last Answer : The amount of bias and the amplitude of the input signal
Description : Once ionization has occurred in a thyratron, what control does the control grid have over the tube’s operation?
Last Answer : None.
Description : What type of clock is used when more than one operation is to be completed during one clock cycle?
Last Answer : . A multiphase clock.
Description : What is the sign of operation for the X-OR gate?
Last Answer : XOR
Description : What is the key to FET operation?
Last Answer : Effective cross-sectional area of the channel.
Description : What type of bias is required for proper operation of a photodiode?
Last Answer : Reverse bias.
Description : The TRIAC is similar in operation to what device?
Last Answer : SCR
Description : What type of diagram is the most useful in learning the overall operation of a system?
Last Answer : A schematic diagram.
Description : What are the required radar inputs for proper indicator operation?
Last Answer : Triggers, video, and antenna information.
Description : Tracking radar searches a small volume of space during which phase of operation?
Last Answer : Acquisition.
Description : What radar subsystem supplies timing signals to coordinate the operation of the complete system?
Last Answer : Synchronizer.
Description : Quality fiber-end preparation is essential for proper system operation. What properties must an optical fiber-end face have to ensure proper fiber connection?
Last Answer : Be flat, smooth, and perpendicular to the fiber axis.
Description : In single mode operation, the value of the normalized frequency (V) should remain near the 2.405 level. If the value of V is less than 1, do single mode fibers carry a majority of the power in the core or cladding material?
Last Answer : Cladding material.
Description : For efficient operation, should a detector have a high or low responsivity at the operating wavelength?
Last Answer : High.
Description : Describe the operation of an optical detector
Last Answer : It is a transducer that converts an optical signal into an electrical signal. It does this by generating an electrical current proportional to the intensity of incident optical radiation.
Description : A computer that is designed to perform a specific operation and usually satisfies the needs of a particular type of problem, is said to be what type of computer?
Last Answer : Special-purpose.
Description : The underlying principle of operation of the parametric amplifier is based on what property?
Last Answer : Reactance.
Description : Why is the pi mode the most commonly used magnetron mode of operation
Last Answer : Greater power output.
Description : If the constant-speed electrons in a reflex klystron remain in the repeller field for 1 3/4 cycles, what is the mode of operation?
Last Answer : Mode 2.
Description : What is the basic principle of operation of a klystron?
Last Answer : Velocity modulation
Description : What limits the tuning range around the center frequency of a reflex klystron in a particular mode of operation?
Last Answer : The half-power points of the mode.
Description : How do the tape guides on a tape reeling system protect the tape from damage during operation?
Last Answer : They keep the tape straight with respect to both the supply and take-up reels and the magnetic heads.
Description : What are the five most prominent communications modes of operation?
Last Answer : Simplex, half-duplex, semiduplex, duplex, and broadcast.
Description : The suppressor grid is added to a tetrode to reduce what undesirable characteristic of tetrode operation?
Last Answer : Secondary emission.
Description : Operation of an accelerometer is based on what physical property?
Last Answer : Inertia.
Description : What are the two teletypewriter modes of operation?
Last Answer : Synchronous and nonsynchronous
Description : Which dispersion mechanism (material or waveguide) is a function of the size of the fiber's core relative to the wavelength of operation?
Last Answer : Waveguide dispersion.
Description : Extrinsic (OH) absorption peaks define three regions or windows of preferred operation. List the three windows of operation.
Last Answer : The first, second, and third windows of operation are 850 nm, 1300 nm, and 1550 nm, respectively.