I Mech 2025 Quiz-2

In mesh analysis, the number of equations is equal to:

• The number of independent loops

• The number of nodes

• The number of sources

• The number of components

What is the shape of the waveform for a pure alternating current?

• Sinusoidal

• Triangular

• Square

• Sawtooth

The frequency of AC in most countries is:

• 50 Hz

• 40 Hz

• 60 Hz

• 100 Hz

The time period of a 50 Hz AC waveform is:

• 0.02 seconds

• 0.01 seconds

• 0.2 seconds

• 2 seconds

What is the maximum value of an AC waveform called?

• Amplitude

• Frequency

• Phase angle

• RMS value

The average value of a pure sinusoidal waveform is:

• Zero

• Equal to the RMS value

• Equal to the peak value

• Infinite

RMS value stands for:

• Root Mean Square

• Random Mean Square

• Ratio Mean Square

• Rectified Mean Signal

The RMS value of a sinusoidal voltage V_m is:

• V_m / √2

• V_m / 2

• √2 V_m

• V_m × 2

Instantaneous power is the product of:

• Voltage and Current

• Voltage and Resistance

• Current and Impedance

• Voltage and Capacitance

Real power in an AC circuit is measured in:

• Watts

• Joules

• Volts

• Henry