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:
The voltage across and the current through a load are expressed as follows Read More »
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:
If 𝐀 = 2𝑥𝐢 + 3𝑦𝐣 + 4𝑧𝐤 and 𝑢 = 𝑥2 + 𝑦2 + 𝑧2, then div(𝑢𝐀) at (1, 1, 1) is Read More »
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
Q. In the circuit shown below, X and Y are digital inputs, and Z is a digital output. The equivalent circuit is a (A) NAND gate (B) NOR gate (C) XOR gate (D) XNOR gate Ans: XOR gate Solution: The Boolean expression for the output of the digital circuit is shown below. The above expression
Q. The output expression for the Karnaugh map shown below is Ans: Option A Solution:
The output expression for the Karnaugh map shown below is Read More »
Q. In the circuit below, the operational amplifier is ideal. If V1 = 10 mV and V2 = 50 mV, the output voltage (Vout) is Solution:
Q. The enhancement type MOSFET in the circuit below operates according to the square law. 𝜇𝑛𝐶𝑜𝑥 = 100 μA/V2, the threshold voltage (VT) is 500 mV. Ignore channel length modulation. The output voltage Vout is (A) 100 mV (B) 500 mV (C) 600 mV (D) 2 V Ans: 600 mV
