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

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

Answer :

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

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

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.

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

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.

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

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).

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?

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.

What is the major difference between direct reproduce electronics and FM reproduce electronics?

Description : What is the major difference between direct reproduce electronics and FM reproduce electronics?

Last Answer : FM record electronics must use a limiter and demodulator circuit (figure 5-5) to demodulate the signal intelligence from the carrier frequency.

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

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.

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

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

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

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

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.

How should a tape recorder with good phase response reproduce a complex waveform, such as a square wave?

Description : How should a tape recorder with good phase response reproduce a complex waveform, such as a square wave?

Last Answer : With no distortion

What type of reeling system best controls a tape recorder's tape tension during starts and stops?

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

What are the four basic parts of a magnetic tape recorder's tape transport 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.

What causes flutter in a tape recorder’s output?

Description : What causes flutter in a tape recorder’s output?

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

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

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

Last Answer : Third-order harmonic.

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

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.

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

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.

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

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

Last Answer : A VTVM and a signal generator.

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

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.

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

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

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

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.

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?

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.

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

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

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?

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.

The control electronics component of a floppy or hard disk drive performs what three main functions?

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.

Which single phase ac motor will you select for record players and tape recorders?

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

How do FM record electronics differ from AM (direct record) electronics?

Description : How do FM record electronics differ from AM (direct record) electronics?

Last Answer : Instead of recording the signal just as it appears at the recorder’s input, FM record electronics records a frequency-modulated carrier signal from a record oscillator (figure 5-4) onto the magnetic tape

A tape pack has gaps in the tape winding as shown in figure 2-5. What causes this condition?

Description : A tape pack has gaps in the tape winding as shown in figure 2-5. What causes this condition?

Last Answer : Tape is loosely wound on reel.

The vertical-deflection plates are used to reproduce what function?

Description : The vertical-deflection plates are used to reproduce what function?

Last Answer : Amplitude.

The vertical-deflection plates are used to reproduce what function?

Description : The vertical-deflection plates are used to reproduce what function?

Last Answer : Amplitude.

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

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.

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

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

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

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

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.

How should you clean your recorder's magnetic heads?

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.

A tape pack is buckled and deformed as shown in figure 2- 4. What are three possible causes for this condition?

Description : A tape pack is buckled and deformed as shown in figure 2- 4. What are three possible causes for this condition?

Last Answer : a. Reel has a distorted hub, b. tape wound over small particle deposited on hub, and c. tape wound on reel with tension increasing toward end of winding.

You notice steps in the tape pack such as those in figure 2-3. What causes this and how does it damage the magnetic tape?

Description : You notice steps in the tape pack such as those in figure 2-3. What causes this and how does it damage the magnetic tape?

Last Answer : Pack slip. It's caused by loosely wound tape on a reel that is exposed to excessive vibration or heat. The vibration or heat causes the tape to shift, causing steps in the tape pack. The uneven tape will then rub against the reel's sides and the recorder's tape guides.

. After rewinding a tape onto its supply reel, you examine the tape pack and notice pile-ups of tape resembling the example in figure 2-2. What causes this condition?

Description : . After rewinding a tape onto its supply reel, you examine the tape pack and notice pile-ups of tape resembling the example in figure 2-2. What causes this condition?

Last Answer : The tape is stopped too quickly when winding or rewinding.

A capacitor used for power factor correction in single phase circuit decreases:

Description : A capacitor used for power factor correction in single phase circuit decreases: (1) Power factor (2) Line current (3) Both line current and p.f. (4) The line current and increases p.f. 

Last Answer : A capacitor used for power factor correction in single phase circuit decreases: The line current and increases p.f. 

Pick up the incorrect statement from the following: (A) While measuring a distance with a tape of length 100.005 m, the distance to be increasing by 0.005 m for each tape length (B) An increase in temperature causes a tape to increase in length and the measured distance is too large (C) The straight distance between end points of a suspended tape is reduced by an amount called the sag correction (D) A 100 m tape of cross section 10 mm × 0.25 mm stretches about 10 mm under 5 kg pull

Description : Pick up the incorrect statement from the following: (A) While measuring a distance with a tape of length 100.005 m, the distance to be increasing by 0.005 m for each tape length (B) An increase in ... ) A 100 m tape of cross section 10 mm 0.25 mm stretches about 10 mm under 5 kg pull

Last Answer : (B) An increase in temperature causes a tape to increase in length and the measured distance is too large

How could you check the phase response of a tape recorder?

Description : How could you check the phase response of a tape recorder?

Last Answer : Record and reproduce a square wave and see if the output on an oscilloscope is symmetrical.

A tape of length and weight kg/m is suspended at its ends with a pull of kg, the sag correction is (A) l3W²/24P² (B) l²W3 /24P² (C) l²W²/24P 3 (D) lW²/24P

Description : A tape of length and weight kg/m is suspended at its ends with a pull of kg, the sag  correction is  (A) l3W²/24P² (B) l²W3 /24P² (C) l²W²/24P 3 (D) lW²/24P

Last Answer : (A) l3W²/24P²

If is the pull applied at the ends of tape in kg, is the length of tape between end marks in metres, is the weight of the tape in kg per metre run, then sag correction (A) C = w²l3 /24F² (B) C = w 3 l²/24F² (C) C = w²l3 /24F3 (D) C = 24w²l3 /80F

Description : If is the pull applied at the ends of tape in kg, is the length of tape between end marks in metres, is the weight of the tape in kg per metre run, then sag correction (A) C = w²l3 /24F² (B) C = w 3 l²/24F² (C) C = w²l3 /24F3 (D) C = 24w²l3 /80F

Last Answer : (A) C = w²l3 /24F²

A standard steel tape of length 30 m and cross-section 15 × 1.0 mm was standardised at 25°C and at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If the modulus of elasticity of steel tape is 2.2 × 106 kg/cm2 , the correction to be applied is (A) - 0.000909 m (B) + 0.0909 m (C) 0.000909 m (D) None of these

Description : A standard steel tape of length 30 m and cross-section 15 1.0 mm was standardised at 25°C and at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If the modulus of elasticity of ... (A) - 0.000909 m (B) + 0.0909 m (C) 0.000909 m (D) None of these

Last Answer : (A) - 0.000909 m

The magnitude of ‘sag correction’ during measurement of lengths by taping is proportional to the : (a) Cube of the weight of the tape, in kg per m run (b) Cube root of the weight of the tape, in kg per m run (c) Square of the weight of the tape, in kg per m run (d) Square root of the weight of the tape, in kg per m run

Description : The magnitude of sag correction' during measurement of lengths by taping is proportional to the : (a) Cube of the weight of the tape, in kg per m run (b) Cube root of the weight of the tape, in kg per m run ... the tape, in kg per m run (d) Square root of the weight of the tape, in kg per m run

Last Answer : (c) Square of the weight of the tape, in kg per m run

What are some ways of chemical equalization ?

Description : What are some ways of chemical equalization ?

Last Answer : Answer : The rules of equalization of chemical reactions are: 1. In a chemical reaction, the reactants have to be written on the left side of the equal or arrow sign and the product on the right side. 2. If there are multiple ... s ( s), liquid ( l ), gaseous ( g ), aqueous solution ( aq ) .

What is the reaction of water addition and equilibration ? What is the reaction of water addition and equalization ?

Description : What is the reaction of water addition and equilibration ? What is the reaction of water addition and equalization ?

Last Answer : Ionic compounds are attached to one or more water molecules during the formation of crystal lattice . This reaction is called hydration reaction. Water associated with ionic compounds is called ... rearranged into molecules of a compound to form another isotope is called an isotope reaction.

What is equalization ?

Last Answer : Molecular signals are the same but structurally different

Equalization of the power factors of two alternators operating in parallel is accomplished _____________. A. manually, by adjusting the governor controls B. automatically, by automatic voltage regulators C. manually, adjusting the output of current transformers D. automatically, by the designed action of the governors

Description : Equalization of the power factors of two alternators operating in parallel is accomplished _____________. A. manually, by adjusting the governor controls B. automatically, by automatic voltage regulators ... the output of current transformers D. automatically, by the designed action of the governors

Last Answer : Answer: B

When charging lead-acid batteries, the charging rate should be reduced as the battery nears its full charge to ____________. A. prevent damaging battery plates B. allow equalization of cell voltages C. reduce lead sulfate deposits D. increase lead peroxide formation

Description : When charging lead-acid batteries, the charging rate should be reduced as the battery nears its full charge to ____________. A. prevent damaging battery plates B. allow equalization of cell voltages C. reduce lead sulfate deposits D. increase lead peroxide formation

Last Answer : Answer: A

When charging lead-acid batteries, you should reduce the charging rate as the battery nears its full charge capacity to ______________. A. prevent excessive gassing and overheating B. allow equalization of cell voltages C. reduce lead sulfate deposits D. increase lead peroxide formation

Description : When charging lead-acid batteries, you should reduce the charging rate as the battery nears its full charge capacity to ______________. A. prevent excessive gassing and overheating B. allow equalization of cell voltages C. reduce lead sulfate deposits D. increase lead peroxide formation

Last Answer : Answer: A

Error detection ata data link level is achieved by A. bit stuffing B. cyclic redundancy codes C. Hamming codes D. equalization

Description : Error detection ata data link level is achieved by A. bit stuffing B. cyclic redundancy codes C. Hamming codes D. equalization

Last Answer : cyclic redundancy codes

Most record and reproduce heads are in one of what three bandwidth categories?

Description : Most record and reproduce heads are in one of what three bandwidth categories?

Last Answer : a. Narrowband—100 Hz to 100 kHz. b. Intermediate band—100 Hz to 500 kHz. c. Wideband—400 Hz to 2 mHz.