Set 3

Question 1 of 100

A delta-connected load has impedance of 30 Ω per phase. When connected to a 400 V (line-to-line) three-phase supply, the line current drawn is approximately:

Question 2 of 100

In a series RLC circuit operating below resonance frequency, the circuit behaves as:

Question 3 of 100

Norton's theorem states that any two-terminal linear network can be replaced by an equivalent circuit consisting of:

Question 4 of 100

In a BJT configured in the common-emitter mode, if the base current is 50 µA and the collector current is 5 mA, the DC current gain (hFE) is:

Question 5 of 100

A MOSFET is operating in the saturation region. Which condition is satisfied?

Question 6 of 100

A Class B push-pull amplifier has a supply voltage of ±15 V and drives an 8 Ω load. The maximum theoretical output power is approximately:

Question 7 of 100

In a Colpitts oscillator, the feedback network consists of:

Question 8 of 100

When Kirchhoff's Voltage Law is applied to a mesh, the algebraic sum of all EMFs and voltage drops in the mesh equals:

Question 9 of 100

The reactive power consumed by a pure inductor connected to an AC supply of 230 V (rms) and 50 Hz with inductance 0.1 H is approximately:

Question 10 of 100

In an op-amp inverting amplifier with Rf = 100 kΩ and Rin = 10 kΩ, an input of +0.5 V produces an output of:

Question 11 of 100

A 4-bit ripple counter uses T flip-flops. The maximum count it can represent before rolling over is:

Question 12 of 100

Simplify the Boolean expression: F = A'B + AB' + AB using a Karnaugh map. The minimal SOP form is:

Question 13 of 100

In an 8085 microprocessor, the ALE (Address Latch Enable) signal is used to:

Question 14 of 100

A priority encoder with 8 inputs produces a ___-bit binary output representing the highest-priority active input:

Question 15 of 100

In asynchronous serial communication, the UART adds start and stop bits to each data frame. The primary purpose of the stop bit is to:

Question 16 of 100

A Master-Slave JK flip-flop is used instead of a simple JK flip-flop primarily to eliminate:

Question 17 of 100

The hexadecimal number 0xAF added to 0x51 produces a result of:

Question 18 of 100

In the 8085 interrupt structure, which interrupt has the highest priority?

Question 19 of 100

A DMA controller takes control of the system bus from the CPU using a mechanism called:

Question 20 of 100