Q. The voltage across and the current through a load are expressed as follows The average power in watts (round off to one decimal place) consumed by the load is Solution:

Q. A 0.1 µF capacitor charged to 100 V is discharged through a 1 kΩ resistor. The time in ms (round off to two decimal places) required for the voltage across the capacitor to drop to 1 V is _______ Solution:

Q. The probability of a resistor being defective is 0.02. There are 50 such resistors in a circuit. The probability of two or more defective resistors in the circuit (round off to two decimal places) is     . Solution: Probability of a resistor being defective (P) = 0.02 Number of resistors (n) = 50 Mean (λ)

Q. If 𝐀 = 2𝑥𝐢 + 3𝑦𝐣 + 4𝑧𝐤   and 𝑢 = 𝑥2 + 𝑦2 + 𝑧2, then div(𝑢𝐀) at (1, 1, 1) is Ans: 45 Solution:

Q. The line currents of a three-phase four wire system are square waves with amplitude of 100 A. These three currents are phase shifted by 120° with respect to each other. The rms value of neutral current is A. 0 A B. 100 A C. 3 A D. 1 A Ans: 100 A Solution:

Q. A DC-DC buck converter operates in continuous conduction mode. It has 48 V input voltage, and it feeds a resistive load of 24 Ω. The switching frequency of the converter is 250 Hz. If switch-on duration is 1 ms, the load power is (A) 6 W (B) 12 W (C) 24 W (D) 48