Description : What are two disadvantages of the take-up control reeling system?
Last Answer : a. It only works in one direction. b. The tape tension varies as the supply reel unwinds, which can cause damage during starts and stops.
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 type of reeling system best controls a tape recorder's tape tension during starts and stops?
Last Answer : A tape buffering reeling system
Description : What are the two basic types of tape buffering reeling systems?
Last Answer : a. Spring-tension buffering systems. b. Vacuum-column buffering systems.
Description : What are the three most commonly used tape reeling systems?
Last Answer : a. Take-up control. b. Two-motor reeling. c. Tape buffering.
Last Answer : The process by which the filament is lifted from the cocoon is called reeling.
Description : What are two advantages that gas-filled tubes have over conventional electron tubes?
Last Answer : a. They can carry more current. b. They maintain a constant IR drop across the tube
Description : What two components give a ssb receiver its advantages over an AM superheterodyne receiver?
Last Answer : A special type of detector and a carrier reinsertion oscillator
Description : State two advantages of using aluminum wire for carrying electricity over long distances.
Last Answer : It is light and reduces corona.
Description : State four advantages of copper over aluminum as a conductor.
Last Answer : It has higher conductivity, it is more ductile, it has relatively high tensile strength, and it can be easily soldered.
Description : List seven advantages of fiber optics over electrical systems.
Last Answer : Advantages of fiber optics are improved system performance, immunity to electrical noise, signal security, electrical isolation, reduced size and w
Description : What part of a floppy disk drive transport uses a dc stepper motor to position the magnetic heads over the recording surface of a floppy disk?
Last Answer : Actuator arm assembly.
Description : What advantage does a shunt motor have over a series motor?
Last Answer : It maintains a constant speed under varying loads.
Description : What are the two functions of the servo motor in the system
Last Answer : To move the load and provide feedback data to the error detector.
Description : What are two advantages of this type of coupling?
Last Answer : It uses fewer components than capacitive coupling and can provide an increase in gain.
Description : What are two advantages of ssb transmission?
Last Answer : It saves power and frequency bandwidth.
Description : Name two advantages of the gated-beam detector.
Last Answer : Extreme simplicity, few components, and ease of adjustment.
Description : Name two advantages in using ICs.
Last Answer : Low power consumption, compact size, and lower cost.
Description : What are the advantages of using two voltmeters in series?
Last Answer : Increased input impedance, greater accuracy, and increased voltage range.
Description : What two main advantages of a parasitic array can be obtained by combining a reflector and a director with the driven element?
Last Answer : Increased gain and directivity.
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 is one of the primary advantages of the FET when compared to the bipolar transistor?
Last Answer : High input impedance.
Description : What are the most important advantages of the Schottky barrier diode?
Last Answer : Lower forward resistance and low noise.
Description : List the major advantages of printed circuit boards.
Last Answer : Eliminate heavy chassis and point-to-point wiring
Description : What are three advantages of adding an ac bias voltage to the input signal instead of adding a fixed dc bias voltage?
Last Answer : a. Reproduces a stronger output signal. b. Greatly improves the SNR. c. Greatly reduces the natural tape hiss.
Description : Are there any differences in the concepts and advantages of ASCII and EBCDIC?
Last Answer : No, they are identical.
Description : What are the advantages of connecting ammeters in parallel when performing current measurements?
Last Answer : Decreased internal meter resistance, greater accuracy, and greater current range.
Description : What are the advantages of using a differential voltmeter?
Last Answer : Accuracy and high input impedance.
Description : Name three advantages of cw transmission
Last Answer : A high degree of clarity even under severe noise conditions, long-range operation, and narrow bandwidth.
Description : What are the advantages of open end winding induction motor over conventional induction motor?
Last Answer : Open ended induction motor - i assume you are talking aboutsplit phase induction motor. With these motors old style speedcontrolling method using external resistors can be used. Howeverthis is now obsolete.
Description : What Are The Advantages Of Three Phase Motor Over Single Phase Motor?
Last Answer : Three phase motors are having Higher starting torques Improved speed regulation Less vibration Quieter operation compared to the single phase motors.
Description : What are the advantages of slip ring motor over squirrel cage motor?
Last Answer : 1. The starting torque can be varied by adding resistance to rotor. 2. The speed of the machine can be varied by injecting an emf through slip rings to the rotor.
Description : Once ionization has occurred in a thyratron, what control does the control grid have over the tube’s operation?
Last Answer : None.
Description : How do dual-motor dual capstan drives maintain a constant tape tension while operating in either a forward or reverse direction?
Last Answer : Each capstan is driven by its own motor. It maintains tape tension by slowing down one of the motors. When the tape motion is reversed, the opposite motor is slowed down.
Description : In the actuator arm assembly of a hard disk drive transport, what device can position the magnetic heads to the correct track of a hard disk more accurately than a dc stepper motor?
Last Answer : Voice coil servo.
Description : The drive motor of a 3-1/2", 1.44-MB floppy disk drive spins the disk at what RPM?
Last Answer : 600 RPM.
Description : Armature reaction in a dc motor causes a shift of the neutral plane in which direction?
Last Answer : Opposite the rotation.
Description : What is the effect on motor speed if the field current is increased?
Last Answer : Motor will slow down.
Description : In a dc motor that must be able to rotate in both directions, how is the direction changed?
Last Answer : By reversing either field or armature connections
Description : What is the main advantage of a series motor?
Last Answer : High torque (turning force) at low speed.
Description : What is the main disadvantage of a series motor?
Last Answer : It must have a load connected to avoid damage from excess speed.
Description : What is the load on a dc motor?
Last Answer : The device to be driven by the motor.
Description : What motor characteristic is affected by counter emf?
Last Answer : Speed.
Description : What causes counter emf in a dc motor
Last Answer : Generator action.
Description : What are the differences between the components of a dc generator and a dc motor?
Last Answer : There are no differences.
Description : What factors determine the direction of rotation in a dc motor?
Last Answer : Direction of armature current, and direction of magnetic flux in field.
Description : What is the effect of motor reaction in a dc generator?
Last Answer : A force which causes opposition to applied turning force.
Description : What is the efficiency of the motor if it actually uses 9.5 kWh in 12 hours?
Last Answer : 942 (rounded to 3 places).
Description : How much power is converted by a 1-horsepower motor in 12 hours?
Last Answer : 8,952 watt hours or 8.952 kWh.
Description : What type of ac motor is most widely used?
Last Answer : Single-phase induction motor.