Which motor is generally used in Tap Recorders? A) universal motor B) reluctance motor C) split phase motor D) hysteresis motor

1 Answer

Answer :

Which motor is generally used in Tap Recorders? A) universal motor B) reluctance motor C) split phase motor D) hysteresis motor

Related questions

Last Answer : D.C. Series motor is generally preferred for cranes and hoists.

Last Answer : The starting resistance of a D.C. motor is generally low.

Description :  Which single phase ac motor will you select for record players and tape recorders?  a) Hysteresis motor b) Shaded pole motor c) Reluctance motor d) Two value capacitor motor

Last Answer : Which single phase ac motor will you select for record players and tape recorders?  Hysteresis motor

Description : Setscrews are (A) Similar to tap bolts except that a greater variety of shapes of heads are available (B) Slotted for screw driver and generally used with a nut (C) Used to prevent relative motion between parts (D) Similar to studs

Last Answer : (C) Used to prevent relative motion between parts

Description : In a regenerative braking, which of the following is generally true?  (a) Back e.m.f. in the motor exceeds the applied voltage (b) Back e.m.f. is less than the applied voltage ... dissipated in a resistance (d) Kinetic energy of the motor is dissipated through free wheeling diode across the motor 

Last Answer : In a regenerative braking, which of the following is generally true?  (a) Back e.m.f. in the motor exceeds the applied voltage (b) Back e.m.f. is less than the applied voltage ... in a resistance (d) Kinetic energy of the motor is dissipated through free wheeling diode across the motor 

Description : Generally, Crawling in squirrel cage induction motors is tendency to run stably at speeds as low as (A) One-third of their synchronous speed (B) One-fifth of their synchronous speed (C) One-seventh of their synchronous speed (D) One-ninth of their synchronous speed

Last Answer : Generally, Crawling in squirrel cage induction motors is tendency to run stably at speeds as low as One-seventh of their synchronous speed

Last Answer : Plugging method of braking is generally used in elevators.

Description : In DC generators lamination core are generally made of?

Last Answer : In DC generators lamination core are generally made of silicon steel.

Description : What will happen if I attempt to swap chips in two identical voice memo recorders?

Last Answer : 90% sure that swapping the chips would be effective. Chips are solid state and your thoughts are stored digitally. When your voice recorder went into the wash, it died because the electronics (battery to chip ... in the new device, you will be successful. It would be a great experiment. Let us know.

Description : What's the difference between the 2 different Dazzle DVD recorders?

Last Answer : Do you have a link to these products?

Description : What Ten of the 50 digital video recorders (DVRs) in an inventory are known to be defective. What is the probability you randomly select an item that is not defective?

Last Answer : It is 0.8

Description : Portable Digital Mixers / Multi Track Recorders?

Last Answer : Recording technology seems to be evolving faster than the speedof sound. Ten years ago, engineers were just starting to seriouslyconsider recording digitally and now it's the industry standard.Thanks to this ... -tracks. It has all thefamiliar knobs and buttons, but there's simply no tape. In

Description : Where do I buy Mac audio recorders?

Last Answer : Mac audio recorders can be very useful or entertaining. They are capable of recording from programs like Skype,and iTunes. It also is capable of recording from a microphone. You can purchase them directly from the Mac website. http://www.macsome.com/audio-recorder-mac/index.html

Description : What is the best brand of dvr recorders?

Last Answer : I find the panasonic DMR-EZ28K DVD recorder with an ASTC Tuner to be the best brand since tv has gone digital and is no longer anolog. It plays DVD's with numerouse different recording formats, has an ... DV so you can record from your digital camera/camcorder, an also has 1080p via an HDMI output.

Description : Are DVD recorders now obsolete?

Last Answer : It depends on whether a DVD recorder would be more cost effective or useful to you than a TIVO. If a DVD player fufills the function that you are looking for, and is cheaper than a TIVO, it would be a good idea to get the DVD player.

Description : Will tv recorders work for ATT UVerse, or do I have to use the DVR that they provide?

Last Answer : While using the DVR that ATT UVerse provides is much easier, it is not impossible to use other TV recorders. ATT UVerse is not fully compatible nationwide with every TiVO for instance, but it ... Some more information can be found at http://www.tivocommunity.com/tivo-vb/showthread.php?t=351670.

Description : Do You Know How Is Automatic Reference Junction Compensation Carried Out In Temperature Recorders?

Last Answer : In automatic reference junction compensation, variable nickel resistor is used. As the temperature changes, so does its resistance. This reference junction compensator is located, so that it will be ... the thermocouple is rejoined. This joint is invariably at the terminal strip of the instrument.

Description : How Is Automatic Reference Junction Compensation Carried Out In Temperature Recorders?

Last Answer : In automatic reference junction compensation, variable nickel resistor is used. As the temperature changes, so does its resistance. This reference junction compensator is located, so that it will be ... the thermocouple is rejoined. This joint is invariably at the terminal strip of the instrument.

Description : Write About Co2 Recorders?

Last Answer : In thermal power plants, it is necessary to keep the concentration Of CO2 is low is necessary as possible. To achieve this, a constant recording of concentration Of CO2 These recorders ... different principles, as given below.  Thermal conductivity cell  Chemical absorption cell  Density balance

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 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 causes flutter in a tape recorder’s output?

Last Answer : Non-uniform tape motion caused by variations in tape speed.

Description : What number harmonic is the primary harmonic distortion in magnetic tape recorders?

Last Answer : Third-order harmonic.

Description : A recorder’s harmonic-distortion specification reads 2% third harmonic of a 100-kHz signal at 60 ips. What does this mean?

Last Answer : The recorder has 2% third-harmonic distortion of a 100-kHz signal at 60 ips.

Description : List four factors that can degrade the frequency response of magnetic tape recorders.

Last Answer : a. A too-high or too-low bias signal level setting for the record head. b. An improper reproduce head gap. c. An improper tape transport speed. d. Poor tape-to-head contact.

Description : Technical manuals for tape recorders can state the SNR in what three different ways?

Last Answer : a. Root-mean-square (RMS) signal-to-RMS noise. b. Peak-to-peak signal-to-RMS noise. c. Peak signal-to-RMS noise.

Description : You plan to measure your tape recorder’s SNR. What test equipment will you need?

Last Answer : A VTVM and a signal generator.

Description : Two tape recorders have signal-to-noise ratios (SNRs) of 25-dB RMS and 35-dB RMS respectively. Which of the SNRs can record and reproduce the widest range of input signals and why?

Last Answer : 35-dB RMS because the highest SNR can always record and reproduce the widest range of input signals.

Description : The head driver circuit of a tape recorder’s FM record electronics (figure 5-4) performs what function?

Last Answer : It amplifies the frequency-modulated output from the record oscillator and sends it to the record head.

Description : The equalization and phase correction circuit in a tape recorder’s direct reproduce electronics (figure 5-2) performs what function?

Last Answer : It generates an equalization signal which corrects any frequency response problems in the input signal from the pre-amplifier circuit.

Description : The head driver circuit in a tape recorder’s direct record electronics component (figure 5-1) performs what function?

Last Answer : It takes the signal from the summing network, amplifies it, and sends it to the record head for recording.

Description : What two types of record and reproduce electronics are used by magnetic tape recorders?

Last Answer : . a. Direct record (AM). b. Frequency modulation (FM).

Description : How often should you demagnetize a recorder's magnetic heads?

Last Answer : Every 8 to 25 hours depending on the manufacturer's recommendations.

Description : What type of equipment should you use to demagnetize your recorder's magnetic heads?

Last Answer : A hand-held degausser like the manual degaussers used for degaussing magnetic tape.

Description : How should you clean your recorder's magnetic heads?

Last Answer : With a cotton-tipped applicator soaked in either isopropyl alcohol or a head cleaner recommended by the recorder's manufacturer.

Description : A recorder's erase head is always placed in what sequence on the record/reproduce track?

Last Answer : . First, before the record and reproduce heads.

Description : Why are record heads always placed before reproduce heads on recorders?

Last Answer : Allow you to monitor the signals you're recording.

Description : What two specifications determine the maximum frequency that a recorder's record and reproduce heads will be able to transfer?

Last Answer : a. Size of the headgap. b. Speed of the magnetic tape.

Description : Magnetic tape recorders can have up to three different heads installed. What are the three functions performed by a recorder's heads?

Last Answer : Record, reproduce, and erase.

Description : What method for erasing magnetic tape is much more effective and reliable than using a recorder’s erase head?

Last Answer : Using a magnetic tape degausser

Description : What are two disadvantages of using a recorder’s erase head to erase data recorded on a magnetic tape?

Last Answer : Using an erase head is slow, and it may not completely erase the tape.

Description : After using a tape that was stored in an area where temperatures exceeded 130º F you notice pieces of oxide sticking to the recorder's tape-transport mechanism, to its magnetic heads, and onto the tape. What is the probable cause of these symptoms?

Last Answer : Oxide shedding. At temperatures above 130º F, oxide coating becomes soft and sheds.

Description : Digital magnetic tape recorders used to store and retrieve digital data fall into what three categories?

Last Answer : a. Computer-compatible digital tape recorders. b. Telemetry digital tape recorders. c. Instrumentation digital tape recorders

Description : Which digital data encoding method helps overcome a tape recorder’s low-frequency response problems by recording two logic levels for each incoming data bit?

Last Answer : Bi-phase level encoding.

Description : X -Y recorders  a) Record one quantity with respect to other quantity b) Record one quantity on X axis with respect to time on Y axis c) Record one quantity on Y axis with respect to time on X axis d) Both (b) and( c)

Last Answer : X -Y recorders Record one quantity with respect to other quantity

Description : The heating time constant of a totally enclosed motor is relatively Select one: a. higher b. lower c. independent of type of enclosure. d. small .

Last Answer : B

Description : Split phase induction motor

Last Answer : Split phase induction motor : There are two windings used in split phase induction motor. It is a type of single-phase induction motor. There are two winding one is called main winding and ... motor have low starting torque it is used for small fans, blowers, centrifugal pumps, grinders etc.

Description : Describe the reason of using dc series motor for electric trains.

Last Answer : Electric trains require an inverse torque speed characteristics for proper operation. That is a higher torque is required at start (when speed is nil or low) and as the train picks up ... torque - speed characteristics of DC series motors match, these motors are suitable for electric trains

Description :  As compared to a split phase motor, a capacitor start motor has _____.

Last Answer :  As compared to a split phase motor, a capacitor start motor has higher starting torque.

Description : For very low speed and high power applications the best suited ac motor is:

Last Answer : For very low speed and high power applications the best suited ac motor is: synchronous motor