List of top Biomedical Engineering Questions on Electrical Circuits

If admittance of a circuit is \( Y = 0.3 - j0.4\text{ s} \), then the magnitude of the impedance is:
If a circuit has unity power factor, then reactive power is:
In a series RLC circuit with \( R = 10\ \Omega \), \( L = 0.1\text{ H} \), \( C = 100\ \mu\text{F} \), the resonant frequency, Q-factor and bandwidth respectively are:
Consider the following statements:
Assertion (A): Norton current is equal to the short-circuit current at the output terminals.
Reason (R): Because Norton equivalent resistance is obtained by deactivating all independent sources and calculating the resistance seen from the output terminals.
The correct answer is:
Given \( v(t) = 100 \sin(100\pi t) \), the RMS value is:
The cut-off frequency of an RC low-pass filter is:
The Thevenin resistance of a circuit is zero, then this implies:
If \( L = 1\text{ H} \), \( C = 1\text{ F} \) and \( R = 1\ \Omega \) in a series RLC circuit, then the circuit is:
At \( t = \infty \) in an RL circuit with DC excitation, the inductor behaves as:
In a series RL circuit excited by DC, the current reaches 63.2% of its final value at:
In a network maximum power transfer occurs when
Norton's theorem is true for

Calculate $V_{th}$ for the given circuit.

Nodal analysis is generally used to determine

Find the value of $V$ when the current in the 3 $\Omega$ resistor is 0. (Circuit diagram provided: A circuit with two voltage sources, 5V and V, and several resistors: 1$\Omega$, 2$\Omega$, 3$\Omega$, 4$\Omega$, 5$\Omega$. The 1$\Omega$ and 3$\Omega$ resistors are in the top branch. The 2$\Omega$ and 4$\Omega$ resistors are in parallel branches.)

For a voltage source to be neglected, the terminals across the source should be
Which law states that the current flowing into junction must be equal to the current flowing out of it?

What is the voltage across the inductor at $t=0$? (Circuit diagram provided: A 60V voltage source in series with a switch that closes at $t=0$, a 30 ohm resistor, and a 15H inductor.) 

The voltage across a capacitor of 0.5F is defined by $V(t)=\begin{cases} 0, & t<0 \\ 2t, & 0<t<2s \\ 4e^{-(t-2)}, & t>2s \end{cases}$. Find $i(t)$
The voltage applied to a 212 mH inductor is given by $V(t)=15e^{-5t}$ V. Calculate the current
In the circuit given below, what should be the value of the resistance \(R\) for maximum dissipation of power in \(R\)?
In the circuit shown below, it is observed that the amplitude of the voltage across the resistor is the same as the amplitude of the source voltage. What is the angular frequency \(\omega_0\) (in rad/s)?
In the circuit below, the two DC voltage sources have voltages of value \(V_1\) and \(V_2\). The expression for the power dissipated in the \(60\,\text{k}\Omega\) resistor is proportional to ____________________.
In the following circuit, the switch \(S\) is open for \(t<0\) and closed for \(t\ge 0\). What is the steady state voltage (in Volts) across the capacitor when the switch is closed? (Round off the answer to one decimal place.)
In the circuit shown below, the amplitudes of the voltage across the resistor and the capacitor are equal. What is the value of the angular frequency \(\omega_0\) (in rad/s)? (Round off the answer to one decimal place.)