**AC FUNDAMENTALS MCQS PART 7**

121 The phase angle between the current and the voltage will be** 𝟎°.**

- The dc applied voltage necessary for the same heating affect in the resistance will be
**120 V.****Questions 123 to 124 refer to data given below:**

An a.c wave form with a frequency of 1.5 kHz has a peak value of 3.3 V. - The instantaneous value of voltage at 0.65 micro-second will be
**20.2 mV.**

124 The instantaneous value at 1.2 milli-seconds will be **-3.1 V.****Questions 125 to 128 refer to data given below:**

The circuit shown in figure below has a 60 Hz supply voltage with a maximum value

of 160 V.

125 The instantaneous current at 𝜋⁄4 radians will be** 11.3 A.**

- The instantaneous power at 𝜋⁄4 radians will be
**2.56 kW.**

127 The instantaneous value of current at5𝜋4radians will be –**5.5 A.**

128 The instantaneous power at3𝜋4radians will be** 2.56 kW.****Questions 129 to 132 refer to data given below:**

A 300 V sinusoidal ac supply is applied to a 50-ohm resistor.

129 The peak value of current through the resistor will be** 8.28 A.**

130 The rms value of current through the resistor will be** 6 A.**