Biomedical Engineering GATE 2023 Questions with Answer

Ques 14 Biomedical Instrumentation

A metallic strain gauge with negligible piezoresistive effect is subjected to a strain of 50 x 10⁻⁶. For the metal, Young's Modulus = 80 GPa and Poisson's Ratio = 0.42. What is the change in resistance (in mΩ), if the unstrained resistance of the strain gauge is 200 Ω? (Round off the answer to one decimal place.)

Ques 15 Biomedical Instrumentation

A Wheatstone bridge strain gauge transducer is constructed on a diaphragm in such a way that when a force is applied on the diaphragm, the resistors R₁ and R₄ will be in compression, and the resistors R₂ and R₃ will be in tension. The bridge excitation voltage (E_in) is 10 Volts. If all the resistors have a resistance of 200 Ω in the absence of any force, and each resistance changes by 20 Ω upon application of a force, what is the output voltage V_out (in Volts) from the Wheatstone bridge? (Round off your answer to the nearest integer.)

Ques 16 Biomedical Measurements

Which one of the following techniques makes use of Korotkoff sounds?

Ques 17 Biomedical Sciences

The pulmonary artery and pulmonary vein _________.

Ques 18 Biomedical Sciences

Which of the following constituents is/are NOT normally found in serum obtained from human blood?

Ques 19 Biomedical Sciences

In the human pancreas, which cell types secrete insulin and glucagon?

Ques 20 Biomedical Sciences

At time t, the cardiac dipole is oriented at -45° (minus forty five degrees) to the horizontal axis. The magnitude of the dipole is 3 mV. Assuming Einthoven frontal plane configuration, what is the magnitude (in mV) of the electrical signal in lead II? (Round off the answer to two decimal places.)

Ques 21 Biomedical Sciences

Which of the following relations is/are CORRECT in terms of various lung volume measurements?

Ques 22 Biomedical Sciences

In a cell viability experiment, 10,000 cells were cultured in the absence and presence of a compound Q for 24 h. The absorbance of a dye associated with cellular metabolic activity was measured at a wavelength of 570 nm at 24 h. The measured absorbances were 0.8 a.u. in the absence of the compound Q, and 0.5 a.u. in its presence.
If the dye gives an absorbance (at 570 nm) of 0.1 a.u. in the absence of cells, what is the percentage cell growth inhibition caused by the compound Q? (Round off the answer to one decimal place.)

Ques 23 Biomedical Sciences

The volume percentage of oxygen in inspired air is 20% and that of expired air is 16%. A person is breathing at a rate of 12 breaths per minute. Each breath is 500 ml in volume. The cardiac output is 5 liters per minute.
Assuming ideal, healthy lung and cardiac conditions, what is the change in percentage of oxygen in blood over 1 minute? (Round off the answer to one decimal place.)

Ques 24 Biomedical Sciences

The intracellular and extracellular concentrations (in mM) of three important ions are given in the table below. The relative permeability of the cell membrane to each ion is provided. Universal gas constant is 8.31 J/(mol.K) and Faraday's constant is 96500 C/mol.
What is the absolute value of the resting membrane potential (in mV) across the cell membrane at 27°C? (Round off the answer to one decimal place.)

Ques 25 Digital Logic

Q, R, S are Boolean variables and ⊕ is the XOR operator. Select the CORRECT option(s).

Ques 26 Electrical Circuits

For the circuit given below, choose the angular frequency ω_0 (in rad/s) at which the voltage across the capacitor has maximum amplitude?