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 ...

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 W Ans: 24 W ...

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 ...

Q. The output expression for the Karnaugh map shown below is Ans: Option A Solution:

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 ...

Q. A moving coil instrument having a resistance of 10 Ω, gives a full-scale deflection when the current is 10 mA. What should be the value of the series resistance, so that it can be used as a voltmeter for measuring potential difference up to 100 V? (A) 9 Ω (B) 99 Ω (C) 990 Ω (D) 9990 ...

Q. The asymptotic Bode magnitude plot of a minimum phase transfer function 𝐺(𝑠) is shown below. (A) Statement I is true and statement II is false.(B) Statement I is false and statement II is true.(C) Both the statements are true.(D) Both the statements are false.Ans: Statement I is ...

Q. The output voltage of a single-phase full bridge voltage source inverter is controlled by unipolar PWM with one pulse per half cycle. For the fundamental rms component of output voltage to be 75% of DC voltage, the required pulse width in degrees (round off up to one decimal place) is  ...