What topics are covered on Page 4 of GATE 2026 Electrical Engineering questions?

Page 4 contains Questions 40 to 52. It includes circuit linearity, Thevenin equivalent, realizability of electrical circuits, power factor with harmonics, average AC power, capacitor transients, Norton equivalent, maximum power transfer and Power Electronics topics involving power diodes, MOSFET switching and linear regulators.

What is the Thevenin equivalent in the GATE 2026 Electrical circuit question?

For the specified circuit between nodes Y and Z, the Thevenin equivalent has VTH equal to 100 V and RTH equal to 0 ohms.

What is the load power factor in the harmonic-current question of GATE 2026 Electrical?

For the sinusoidal 50 Hz voltage source supplying fundamental and third-harmonic current components, the load power factor is 0.57.

What load resistance gives maximum power transfer in GATE 2026 Electrical Engineering?

For the given two-port network, the resistive load required for maximum power transfer is approximately 3.10 ohms.

What is the maximum efficiency of the linear regulator in GATE 2026 Electrical?

For the given BJT and Zener-diode linear regulator circuit, the maximum possible efficiency is 48.0 percent.

Electrical Engineering Gate 2026 Questions with Answer

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Ques 40 GATE 2026

Consider a linear arrangement of seven bulbs, each of which can be in the ON or OFF states. The initial configuration of the bulbs is shown in the figure. In every Step, the states of the bulbs are changed based on the following rules:
• Any OFF bulb with exactly one ON neighbor at the end of the previous Step is turned ON.
• Any ON bulb with both neighbors ON at the end of the previous Step is turned OFF.
• The state of any bulb not meeting the conditions above is left unchanged.
The state of bulbs at the end of Step 1 and Step 2 are also shown in the figure.
The number of bulbs which are ON at the end of Step 8 is ______

(a) is the correct answer.

Ques 41 GATE 2026

P and Q are two positive integers such that P² = Q² + 13.
The product of the numbers P and Q is _________

Ques 42 GATE 2026

A circuit with ideal elements is shown (diode D, resistor R, inductor L, capacitor C in series with DC source).

Which one of the following options correctly identifies all the linear elements in the circuit?

R only

R, L, and C only

D only

L, C, and D only

(b) is the correct answer.

Ques 43 GATE 2026

For the circuit shown, which one of the following options correctly identifies the Thevenin’s equivalent parameters between nodes Y and Z?

V_TH = 100 V, R_TH = 10 kΩ

V_TH = 140 V, R_TH = 0 Ω

V_TH = 100 V, R_TH = 0 Ω

V_TH = 140 V, R_TH = 10 kΩ

Ques 44 GATE 2026

Refer to the four circuits shown,

Which one of the following options for k₁, k₂, k₃, and k₄ makes all of them realizable?

k1 = 1, k4 = −1/3, for all values of k2 and k3

k2 = −2, k3 = +1/3, for all values of k1 and k4

k1 = 2, k2 = 0.5, k3 = −2/3, k4 = −3

k1 = 2, k2 = −0.5, k3 = −2/3, k4 = +3

(d) is the correct answer.

Ques 45 GATE 2026

A single-phase voltage source v_s = 325 sin(2π50t) V delivers a current, i = 12 sin(2π50t) + 9 sin(2π150t) A to a load.
The load power factor, correct up to two decimal places, is:

1.00

0.80

0.65

0.57

(d) is the correct answer.

Ques 46 GATE 2026

An electrical component has voltage drop v = V_msin(ωt), when the current through it is i = I_msin(ωt − θ).
What is the average power dissipated over a half cycle corresponding to ω?

V_mI_mcosθ

(V_mI_m/2)cosθ

(V_mI_m/4)cosθ

Ques 47 GATE 2026

The electrical network shown has an independent voltage source (10 V) and a current source (1 u(t) mA).
The voltage across the capacitor at time instants (in seconds) t = 0⁺, t = 0.50, and t = ∞, respectively, is:

8.00 V, 28.00 V, 26.36 V

8.00 V, 26.36 V, 28.00 V

10.00 V, 26.36 V, 28.00 V

10.00 V, 28.00 V, 26.36 V

(d) is the correct answer.

Ques 48 GATE 2026

The terminal voltage and current of a linear electrical network shown in Figure (a) are given in the table.

The correct choice for the parameters (I_N, R_N) of the Norton equivalent circuit shown in Figure (b) is:

I_N = 3.0 A, R_N = 24.0 Ω

I_N = 12.0 A, R_N = 2.0 Ω

I_N = 2.0 A, R_N = 12.0 Ω

I_N = 2.0 A, R_N = 24.0 Ω

(d) is the correct answer.

Ques 49 GATE 2026

Consider the two-port network shown. For maximum power transfer to the resistive load (R_L), the value of R_L should be__________ Ω

(Round off to two decimal places)

(3.10) is the correct answer.

Ques 50 GATE 2026

The figure shows a straight-line approximation for the forward characteristics of a power diode. A continuous on-state current of 15 A is flowing through the diode.

What is the power loss in the diode?

32.8 W

21.2 W

18.6 W

23.1 W

Ques 51 GATE 2026

Consider the circuit shown in Figure (a). A gate pulse v_g is applied between time instants t₀ and t₁. After t₁, during the MOSFET turn OFF process, it experiences a voltage overshoot.
Based on the v_ds waveforms shown in Figure (b), which one of the following options is correct?

R₁ > R₂ > R₃

R₁ > R₃ > R₂

R₃ > R₂ > R₁

R₂ > R₃ > R₁

(a) is the correct answer.

Ques 52 GATE 2026

In the linear regulator circuit shown, the base to emitter voltage V_BE of the BJT is 0.6 V. The Zener diode clamps the base voltage to 5.4 V. Ignore the biasing current of the Zener diode and BJT.
The maximum possible efficiency of the regulator circuit is ___________ %
(Round off to one decimal place)

(48.0) is the correct answer.

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