Biomedical Eng. Gate Yearwise 


Biomedical Engineering GATE 2025 Questions with Answer

Ques 53 Medical Imaging

Which of the following statement(s) about ultrasound waves is/are true?

A

Acoustic impedance of biological tissues is directly proportional to its density

B

The reflection coefficient depends on the impedance mismatch at the interface of two biological tissues

C

The transmission coefficient is independent of the impedance of biological tissues

D

Biological tissues do not reflect ultrasound waves


Ques 54 Medical Imaging

If the gyromagnetic ratio of proton is 42.58 MHz per Tesla, the resonance frequency for protons in a magnetic field of 1.5 Tesla is ______ MHz. (rounded off to two decimal places)


Ques 55 Neuroscience

Cerebrospinal fluid in humans is present in the ______ space.

A

subdural

B

subarachnoid

C

pericardial

D

epidural


Ques 56 Neuroscience

Which of the following statement(s) is/are CORRECT about neuronal membrane and neuronal action potential?

A

Application of an outward current depolarizes the neuronal membrane

B

Application of an inward current depolarizes the neuronal membrane

C

Increasing the stimulus strength increases the amplitude of neuronal action potential

D

Increasing the stimulus strength decreases the latency of neuronal action potential


Ques 57 Physiology

Given the following statements, which one of the options is correct?
Statement (i): Histology is the study of histones
Statement (ii): Cytology is the study of tissues

A

Both the statements are correct

B

Both the statements are incorrect

C

Statement (i) is correct; statement (ii) is incorrect

D

Statement (i) is incorrect; statement (ii) is correct


Ques 58 Physiology

The duration of action potential in a ventricular muscle cell of a human heart ranges from ______ milliseconds.

A

2 to 3

B

200 to 300

C

2000 to 3000

D

20 to 30


Ques 59 Physiology

Which one of the following hormones is NOT secreted by the adrenal gland in humans?

A

Cortisol

B

Epinephrine

C

Oxytocin

D

Aldosterone


Ques 60 Physiology

The plot of log10(BMR) as a function of log10(M) is a straight line with slope 0.75, where M is the mass of the person and BMR is the Basal Metabolic Rate. If a child with M=10 kg has a BMR=600 kcal/day, the BMR for an adult with M=100 kg is ______ kcal/day. (rounded off to the nearest integer)


Ques 61 Physiology

The cardiac output of a person at rest is 5 litres per minute and the mean aortic pressure is 100 mmHg. During exercise, if the cardiac output doubles and mean aortic pressure rises to 110 mmHg, then the peripheral resistance in the systemic %. (rounded off to the nearest integer) circulation will decrease by


Ques 62 Signals and Systems

A time domain signal is given by
x(t)=20 sin(100πt)+36 sin(150πt)-2 sin(300πt),
where time t is in seconds. Among the following options, what is the frequency (in Hz) at which x(t) should be sampled for accurate signal reconstruction?

A

500

B

200

C

150

D

250


Ques 63 Signals and Systems

A time domain signal is given by
x(t)=20 sin(100πt)+36 sin(150πt)-2 sin(300πt),
where time t is in seconds. Among the following options, what is the frequency (in Hz) at which x(t) should be sampled for accurate signal reconstruction?

A

500

B

200

C

150

D

250


Ques 64 Signals and Systems

Two systems U and V are defined as shown below. Which of the following statement(s) is/are CORRECT?

A

System U is nonlinear; System V is linear

B

System U is causal; System V is noncausal

C

System U is noncausal; System V is causal

D

System U is nonlinear; System V is nonlinear


Ques 65 Signals and Systems

A discrete linear time invariant system has an impulse response function given by
h[n]=δ[n]+(1/2)δ[n-1]+(1/3)δ[n-2].
For input signal
x[n]=δ[n]+δ[n-1],
which of the following option(s) is/are CORRECT for the output signal y[n]?

A

y[2]=11/6

B

y[2]=5/6

C

y[k]=0 for all k≥3

D

y[k]=0 for all k≥4


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