2025 · Paper 1

Complete GATE IN 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 43–45 of 65. Imported answers require review unless explicitly marked reviewed.

Question 43

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INMCQ2 marksNeeds review

A 3-bit DAC is implemented using ideal opamp and switches as shown in the figure. Each of the switches gets closed when its corresponding digital input is at logic 1. For a digital input of 110, the resistance



seen from the reference source and the current



, are



Your answerChoose one option.

A.



and



B.



and



C.



and



D.



and



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Question 44

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INMCQ2 marksNeeds review

Power consumed by a three-phase balanced load is measured using two-wattmeter method. The per-phase average power drawn by the load is 30 kW at



lagging power factor. The readings of the wattmeters will be

Your answerChoose one option.

A.

15 kW and 15 kW

B.

22.5 kW and 7.5 kW

C.

60 kW and 30 kW

D.

45 kW and 45 kW

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Question 45

Open question

INMCQ2 marksNeeds review

The bridge circuit, shown in Figure (a), can be equivalently represented using the circuit shown in Figure (b). The values of R₁, R₂, and V_C in the equivalent circuit are



Your answerChoose one option.

A.

R₁ = 6 kΩ, R₂ = 3 kΩ, and V_C = 9 V

B.

R₁ = 3 kΩ, R₂ = 6 kΩ, and V_C = 4.5 V

C.

R₁ = 2 kΩ, R₂ = 2 kΩ, and V_C = 9 V

D.

R₁ = 2 kΩ, R₂ = 2 kΩ, and V_C = 4.5 V

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