Question:
Loading effect is primarily caused by instruments having _______.
Loading effect is primarily caused by instruments having _______.
Show Hint
Instruments with low sensitivity and low input resistance cause loading effects by altering the circuit behavior during measurement.
Updated On: Jun 24, 2025
- High resistance
- High sensitivity
- Low sensitivity
- High range
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understand loading effect
Loading effect occurs when a measuring instrument draws significant current from the circuit it is measuring, thereby altering the actual behavior or voltage of the circuit.
Step 2: Relation with input resistance and sensitivity
- An ideal voltmeter has infinite input resistance (so it doesn't draw current).
- A real voltmeter with low sensitivity draws more current, hence creates a voltage drop, causing loading.
Step 3: Low sensitivity instruments
These have lower internal resistance and higher current draw, hence introduce significant loading effects.
Therefore, Option (3) is correct.
Loading effect occurs when a measuring instrument draws significant current from the circuit it is measuring, thereby altering the actual behavior or voltage of the circuit.
Step 2: Relation with input resistance and sensitivity
- An ideal voltmeter has infinite input resistance (so it doesn't draw current).
- A real voltmeter with low sensitivity draws more current, hence creates a voltage drop, causing loading.
Step 3: Low sensitivity instruments
These have lower internal resistance and higher current draw, hence introduce significant loading effects.
Therefore, Option (3) is correct.
Was this answer helpful?
0
0
Top Questions on Electrical Components
Consider a three-core, three-phase, 50 Hz, 11 kV cable whose conductors are denoted as R, Y and B in the given figure. The inter-phase capacitance (C1) between each pair of conductors is 0.2 $\mu$F and the capacitance (C2) between each line conductor and the sheath is 0.4 $\mu$F.
- AP PGECET - 2025
- Electrical Engineering
- Electrical Components
- In an inverting RC integrator using an Op-amp, \( RC = 1\,\text{s}, \, V_i = 5\,\text{V} \), then \( V_o = \, \_\_\_\_\_\_\_ \)
- AP PGECET - 2025
- Electrical Engineering
- Electrical Components
For the figure below, \( x(t) \) and \( y(t) \) are related as _______.
- AP PGECET - 2025
- Electrical Engineering
- Electrical Components
- Which of the following signals are periodic?
\[ x(t) = \sin t + \cos 2\pi t \\ y(t) = \sin 2\pi t + \sin 5t \\ z(t) = \sin t + \cos \pi t \]- AP PGECET - 2025
- Electrical Engineering
- Electrical Components
- The number of roots of $s^3 + 5s^2 + 7s + 3 = 0$ in the right half of the s-plane is _______.
- AP PGECET - 2025
- Electrical Engineering
- Electrical Components
View More Questions
Questions Asked in AP PGECET exam
- Suppose \( R_1 \) and \( R_2 \) are reflexive relations on a set \( A \). Which of the following statements is correct?
- AP PGECET - 2025
- Set Theory
- Determine the value of $\lambda$ and $\mu$ for which the system of equations
$x + 2y + z = 6$,
$x + 4y + 3z = 10$,
$2x + 4y + \lambda z = \mu$
has a unique solution.- AP PGECET - 2025
- Linear Algebra
For a two-port network to be reciprocal, it is necessary that ……..
- AP PGECET - 2025
- Electrical power
- Which strategy can be used to minimize the shear damage in bioreactors used for animal cell culture?
- AP PGECET - 2025
- Cell Biology
- Let \( z \) be a complex variable and \( C : |z| = 3 \) be a circle in the complex plane. Then,\[ \oint_C \frac{z^2}{(z - 1)^2(z + 2)} \, dz = \]
- AP PGECET - 2025
- Complex numbers
View More Questions