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Microphone: Converts a sound wave into an electrical signal. Loudspeaker: Converts an electrical signal into sound waves. Headphone: Converts electrical energy into mechanical energy to produce sound. Amplifier: • It is used to change the amplitude of a signal. • The purpose of an amplifier is to produce an output signal larger than that of the input signal. • It is used to convert Direct current into Alternate Current.
Select the figure from among the given options that can replace the question mark (?) in the following series.
Find the question mark?figure from answer figure.
Select the figure which will come next in the following figure series.
Select the figure from among the given options that can replace the question mark in the given series.
Select the figure from among the given options that can replace the question mark (?) in the following series.
Each of the following questions consists of two sets of figures. Figures A, B, C and D constitute the Problem Set while figures (1), (2), (3) and (4) c...
Select the figure from among the given options that can replace the question mark (?) in the following series.
Select the figure which will come next in the following figure series.
Select the figure that will come next in the following series.
Select the figure from among the given options that can replace the question mark (?) in the following series.
