Biomedical Eng. Gate Yearwise 


Biomedical Engineering Gate 2025 Questions with Answer

Ques 14 GATE 2025

An ideal, massless spring with spring constant 1 N/m (upper panel of the given figure) is cut into 5 equal parts. If two of these parts are connected in parallel (lower panel of the given figure), what is the resultant spring constant in N/m? (rounded off to the nearest integer)
Assume linear behavior of the springs.


(10) is the correct answer.

Ques 15 GATE 2025

Consider two cuboidal blocks of volume 1 cm3 each, one made of gold and the other of undoped silicon. What will happen to the resistivity of these blocks if the temperature is increased from 300 K to 350 K? Choose one of the following.

A

Resistivity of gold increases and undoped silicon decreases

B

Resistivity of gold decreases and undoped silicon increases

C

Resistivity of gold remains same and undoped silicon increases

D

Resistivity of gold decreases and undoped silicon remains same


(a) is the correct answer.

Ques 16 GATE 2025

Which one of the following represents the frequency response of a notch filter?

A

B

C

D


(d) is the correct answer.

Ques 17 GATE 2025

In the circuit shown below, assuming an ideal op-amp, for an input voltage Vin=1V, the output voltage Vout = ______ (in volts).


(2.0) is the correct answer.

Ques 18 GATE 2025

In the electrocardiogram (ECG) of humans, the electrical signature of atrial repolarization is masked by the

A

P wave

B

QRS complex

C

T wave

D

ST segment


(b) is the correct answer.

Ques 19 GATE 2025

Which one of the following does NOT use piezoelectric transducers?

A

Ultrasonography

B

Phonocardiography

C

Echocardiography

D

Electroencephalography


(d) is the correct answer.

Ques 20 GATE 2025

A low pass filter with cutoff frequency of 250 Hz is NOT suitable for recording

A

Electrocardiogram (ECG)

B

Electroencephalogram (EEG)

C

Electromyogram (EMG)

D

Electrooculogram (EOG)


(b) is the correct answer.

Ques 21 GATE 2025

The Electroencephalogram (EEG) voltage measured by a test device is 2.4 μV, while the reference device measured it to be 3.0 μV. What is the percentage error of the test device?

A

25%

B

20%

C

10%

D

0.6%


(b) is the correct answer.

Ques 22 GATE 2025

Which of the following statement(s) about pulse oximetry is/are TRUE?

A

Oxygenated hemoglobin absorbs less infrared light (900 nm) compared to deoxygenated hemoglobin

B

Oxygenated hemoglobin absorbs less visible light (600 nm) compared to deoxygenated hemoglobin

C

Oxygenated hemoglobin absorbs more visible light (600 nm) compared to deoxygenated hemoglobin

D

Oxygenated hemoglobin absorbs more infrared light (900 nm) compared to deoxygenated hemoglobin


(a) is the correct answer.

Ques 23 GATE 2025

For an 8-bit Digital to Analog Converter (DAC), the binary input 0000 0000 results in 0 V, and 1111 1111 results in 5 V. The output of the DAC for an input of 1011 0111 is ______ (in volts, rounded off to two decimal places).


(3.58) is the correct answer.

Ques 24 GATE 2025

What is the output voltage Vout for the circuit shown below? (in volts, rounded off to the nearest integer).


(-13) is the correct answer.

Ques 25 GATE 2025

Resistance R of a thermistor varies as a function of temperature T such that
R(T)=R0exp[β(1/T-1/T0)].
where β=3100 K and, R0 and T0 are positive constants. If the relative error in measuring R is 10%, what is the relative error (in percentage) in measuring 310 K temperature? (rounded off to the nearest integer)


(3) is the correct answer.

Ques 26 GATE 2025

The frequency of the oscillator circuit shown in the figure below is ______ kHz. (rounded off to two decimal places)
Given: R = 1 kΩ; R1 = 2 kΩ; R2 = 6 kΩ; C = 0.1 µF


(1.59) is the correct answer.

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