Impact printer..

Impact printer..

"strikes a ribbon against the paper to produce character image"

what generates a light beam at a specific visible frequency?

what generates a light beam at a specific visible frequency?

"Laser"

what is the frequency limit of an optical fiber?

what is the frequency limit of an optical fiber?

"40 GHz"

single sideband full carrier emission type..

single sideband full carrier emission type..


"H3E"

 Note: to set hyperbolic function in FX-991ES just select [hyp] and select the function that you need",)

Hyperbolic functions - sinh, cosh, tanh, coth, sech, csch

DEFINITION OF HYPERBOLIC FUNCTIONS

Hyperbolic sine of x = sinh x = (e^x - e^-x)/2
Hyperbolic cosine of x = cosh x = (e^x + e^-x)/2
Hyperbolic tangent of x = tanh x = (e^x - e^-x)/(e^x + e^-x)
Hyperbolic cotangent of x = coth x = (e^x + e^-x)/(e^x - e^-x)
Hyperbolic secant of x = sech x = 2/(e^x + e^-x)
Hyperbolic cosecant of x = csch x = 2/(e^x - e^-x)

RELATIONSHIPS AMONG HYPERBOLIC FUNCTIONS

tanh x = sinh x/cosh x
coth x = 1/tanh x = cosh x/sinh x
sech x = 1/cosh x
csch x = 1/sinh x
cosh²x - sinh²x = 1
sech²x + tanh²x = 1
coth²x - csch²x = 1

SSB means?

SSB means?

"Single Sideband with suppressed carrier"

The degree of selectivity desirable in the IF circuitry of a single-sideband receiver..

The  degree of  selectivity desirable in the  IF circuitry of a single-sideband receiver..

"2.4 k Hz"

_____ is a microwave link between the down-town and another out of town terminal.

_____ is a  microwave  link  between  the  down-town  and  another  out  of town  terminal.


"Terrestrial"

Commercial load for radio shall not exceed _____ minutes for one hour program in metro manila..

Commercial load  for  radio  shall  not  exceed  _____ minutes  for  one  hour  program  in metro manila..



"15 "

What filter is used to block light from a laser and let other light through?

What  filter is used  to block  light  from  a  laser  and  let  other  light  through?



"interference"

Digital to analog converter in synchronous modems send signals to the _____

Digital to analog converter in synchronous modems send signals to the  _____



"Equalizer"

nominal voice channel bandwidth is _____.

nominal voice channel bandwidth is _____.



"4 KHz"

Gain of a half-wave dipole antenna over isotropic?

Gain of a half-wave dipole antenna over isotropic?

"2.15 dB"

Amplitude distortion results from ________ amplification.

Amplitude distortion results from ________ amplification.


"Nonlinear"

Note:Amplitude distortion is distortion occurring in a system, subsystem, or device when the output amplitude is not a linear function of the input amplitude under specified conditions. read more...

how many phons are there in 8 tons?

how many phons are there in 8 tons?

"70"

Sound wave has two main characteristics which are :

Sound wave has two main characteristics which are :

"Pitch and Loudness"

Which type of microphone operated by electromagnetic induction that generates an output signal voltage?

Which type of microphone operated by electromagnetic induction that generates an output signal voltage?


"Dynamic"

The main function of the RF amplifier in a superheterodyne receiver is to:

The main function of the RF amplifier in a superheterodyne receiver is to:

" improve the rejection of the image frequency "