What is reactance? - Avionics MCQ

Aeronautical & Aerospace Engineering : Avionics - Quiz(MCQ)

What is reactance?

Resistance offered to ac current by coil and capacitance

Resistance offered to dc current by resistor

Resistance offered to ac current by resistor only

Resistance offered to dc current by coil and capacitance

Correct Answer : Resistance offered to ac current by coil and capacitance

Explanation : Both coils and capacitors offer an opposition to alternating current flow known as reactance, which is expressed in ohms. Like resistance, reactance is an opposition that directly affects the amount of current in a circuit.

Recently Updated in Avionics Questions

What is the peak value of 5th harmonic if the square wave has a peak voltage of 3v and a frequency of 48Khz?

0.52

0.74

0.76

1.5

Correct Answer : Option (C) : 0.76

Explanation : avionics

Which instrument produces frequency domain information?

Oscilloscope

Beam analyzer

Frequency divider

Spectrum analyzer

Correct Answer : Option (D) : Spectrum analyzer

Explanation : The test instrument for producing a frequency-domain display is the spectrum analyzer. Like the oscilloscope, the spectrum analyzer uses a cathode-ray tube for display, but the horizontal sweep axis is calibrated in hertz and the vertical axis is calibrated in volts or power units or decibels.

A pulse train has a rise time of 6 ns. What is the minimum bandwidth to pass this pulse train faithfully?

41.5MHz

42.6MHz

58.3MHz

812MHz

Correct Answer : Option (C) : 58.3MHz

Explanation :