Description : What is the device called that will separate alternating current from direct current, or that will separate alternating current of one frequency from other alternating currents of different frequencies?
Last Answer : A filter.
Description : Which method, vapor phase oxidation or direct-melt process, transforms deposited material into a solid glass preform by heating the porous material without melting?
Last Answer : Vapor phase oxidation.
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.
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
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 effect does inductance have (a) on steady direct current and (b) on direct current while it is changing in amplitude?
Last Answer : a) No effect. (b) Inductance opposes any change in the amplitude of current.
Description : Why is direct accessing of data a big advantage over the sequential accessing of data?
Last Answer : It gives us fast, immediate access to specific data without having to examine each and every record from the beginning.
Description : What is a disadvantage of a direct-current system with respect to supply voltage?
Last Answer : the dc voltage must be generated at the level required by the load.
Description : Define direct current.
Last Answer : An electrical current which flows in one direction only.
Description : What is the relative length of the discharge time constant with respect to the charge time constant of a damper (long or short)?
Last Answer : Long time constant.
Description : What is the relative length of the time constant for the diode capacitor combination in a damper (long or short)?
Last Answer : Short time constant.
Description : What is a short discharge of electric current that prepares the fiber ends for fusion called?
Last Answer : Prefusion
Description : Which types of LEDs are the preferred optical sources for short-distance, low-data-rate fiber optic systems?
Last Answer : SLEDs and ELEDs.
Description : LEDs operating at 850 nm provide sufficient optical power for short-distance, low-bandwidth multimode systems. List three conditions that prevent the use of LEDs in longer distance, higher bandwidth multimode systems.
Last Answer : Multimode fiber dispersion, the relatively high fiber attenuation, and the LED's relatively low optical output power.
Description : What is the effect on total resistance and total current in a circuit if a short occurs in (a) a parallel branch, and (b) in a series portion?
Last Answer : (a) Total resistance decreases, total current increases (b) Total resistance decreases, total current increases
Description : What is a short circuit?
Last Answer : An accidental path of low resistance which passes an abnormally high amount of current.
Description : When aligning the trace with a short applied to channel A, which control should be adjusted to bring the trace parallel to the vertical axis?
Last Answer : TRACE ROTATE control.
Description : Why radiologists do not take direct Xray photographs of intestine? (1) Intestines are affected by direct exposure to X-rays (2) X-rays can not cross intestine (3) X-rays are not able to capture clear picture (4) Even short exposure of X-rays causes cancer in intestine
Last Answer : (3) X-rays are not able to capture clear picture Explanation: As the intestine is a soft tissue structure, it is not usually seen on a plain X-ray. By using barium to coat the inner lining ... tube will be inserted through your nostril or mouth and down into your stomach by the Doctor or Nurse.
Description : The insulation of electric generators during short idle periods should be _____________. A. allowed to cool slowly to ambient temperatures B. flashed with direct current to remove any residual ... using strip or space heaters D. relieved of all capacitive charge by grounding the conductors
Last Answer : Answer: C
Description : In an alternating current electrical system, a low system power factor is a direct sign of _____________. A. wasted energy B. efficient operation C. a short in the exciter field windings D. an excessive number of minor system grounds
Last Answer : Answer: A
Description : Sales promotion is best defined as a(n) 1. activity and / or material used as a direct inducement to resellers, salespersons, or consumers 2. advertising and publicity campaign 3. cyclical activity ... effects on sales 4. activity and/or material used in personal selling 5. none of these
Last Answer : activity and / or material used as a direct inducement to resellers, salespersons, or consumers
Description : Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to (A) Very long columns (B) Long columns (C) Short columns (D) Intermediate columns
Last Answer : (D) Intermediate columns
Description : A column that fails due to direct stress is called (a) Short column (b) Long column (c) Medium column (d) Slender column
Last Answer : (a) Short column
Description : Which element of the promotional mix consists of short-term incentives to encourage the purchase of a product? A. advertising B. public relations C. direct marketing D. sales promotion
Last Answer : D. sales promotion
Description : Which tool of the promotional mix consists of short-term incentives to encourage the purchase or sale of a product or service? A. Advertising B. Public relations C. Direct marketing D. Sales promotion
Last Answer : D. Sales promotion
Description : Sales promotion is best defined as a(n) A)activity and/or material used as a direct inducement to resellers, salespersons, or consumers. B)advertising and publicity campaign. C)cyclical activity aimed at producing short -run effects on sales. D)activity and/or material used in personal selling.
Last Answer : A)activity and/or material used as a direct inducement to resellers, salespersons, or consumers.
Description : Why radiologists do not take direct X-ray photographs of intestine ? (1) Intestines are affected by direct exposure to X-rays (2) X-rays can not cross intestine (3) X-rays are not able to capture clear picture (4) Even short exposure of X-rays causes cancer in intestine
Last Answer : X-rays are not able to capture clear picture