MCQOPTIONS
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MCQOPTIONS
This section includes 179 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Calculate the resistance as per the given colour code. |
| A. | 345 × 103 Ω |
| B. | 345 × 101 Ω ± 10% |
| C. | 345 Ω |
| D. | 345 × 10-1 Ω ± 10% |
| Answer» C. 345 Ω | |
| 102. |
If a brass core of an inductor is replaced by an iron core, the inductance of coil: |
| A. | Increases |
| B. | Decreases |
| C. | Does not change |
| D. | Will be zero |
| Answer» B. Decreases | |
| 103. |
A voltage source having an open circuit voltage of 100 V and internal resistance of 50 ohms is equivalent to a current source of: |
| A. | 2 A in parallel with 100 ohms |
| B. | 2 A in series with 50 ohms |
| C. | 0.5 A in parallel with 50 ohms |
| D. | 2 A in parallel with 50 ohms |
| Answer» E. | |
| 104. |
In the circuit below, the capacitors are fully charged. What is the voltage across C1, C2, and C3 respectively? |
| A. | 4 V, 4 V, 2 V |
| B. | 2 V, 2 V, 6 V |
| C. | 3 V, 3 V, 4 V |
| D. | 2.5 V, 2.5 V, 5 V |
| Answer» E. | |
| 105. |
Find the current 'I' flowing towards the node (N) in the circuit shown below. |
| A. | 15 A |
| B. | 1 A |
| C. | 5 A |
| D. | 10 A |
| Answer» D. 10 A | |
| 106. |
In order to cover a large area of a dielectric medium, the capacitance should be _______. |
| A. | Very high |
| B. | Low |
| C. | Zero |
| D. | Extremely low |
| Answer» B. Low | |
| 107. |
Find the value of I4 in the following node. |
| A. | I2 + I3 + I5 – I1 |
| B. | I1 + I2 + I3 + I5 |
| C. | I1 – I2 – I3 – I5 |
| D. | I2 + I3 + I5 |
| Answer» B. I1 + I2 + I3 + I5 | |
| 108. |
If the voltage applied across a capacitance is triangular in waveform then waveform of the current is: |
| A. | Triangular |
| B. | Trapezodiol |
| C. | Sinusodial |
| D. | Rectangular |
| Answer» E. | |
| 109. |
In the circuit shown below the voltage across 100 Ω resistance is: |
| A. | 50 V |
| B. | 100 V |
| C. | 60 V |
| D. | 120 V |
| Answer» E. | |
| 110. |
Find the current through the 2 Ω resistor in the figure given below |
| A. | 0.5 A |
| B. | 0.625 A |
| C. | 1 A |
| D. | 1.25 A |
| Answer» C. 1 A | |
| 111. |
An ammeter is always connected in |
| A. | Parallel |
| B. | Series |
| C. | Series-parallel |
| D. | None of the above |
| Answer» C. Series-parallel | |
| 112. |
Conservation of charge law is applied on: |
| A. | Kirchhoff’s Current Law |
| B. | Faraday’s Law |
| C. | Lenz’s Law |
| D. | Kirchhoff’s Voltage Law |
| Answer» B. Faraday’s Law | |
| 113. |
Consider the following circuit and determine the values of readings on ammeters A1 through A8 when it is given that all the resistor have the same value of 10 Ω and Ammeter A5 reads 3 A. |
| A. | 11 A, 6 A, 2 A, 2 A, 3 A, 5 A, 11 A, 11 A |
| B. | 11 A, 16 A, 12 A, 2 A, 3 A, 5 A, 11 A, 11 A |
| C. | 1 A, 16 A, 12 A, 2 A, 3 A, 5 A, 11 A, 11 A |
| D. | 11 A, 6 A, 2 A, 12 A, 3 A, 5 A, 11 A, 12 A |
| Answer» B. 11 A, 16 A, 12 A, 2 A, 3 A, 5 A, 11 A, 11 A | |
| 114. |
According to Kirchhoff’s voltage law, the algebraic sum of all the voltage in any closed loop of a network is always |
| A. | Negative |
| B. | Positive |
| C. | Zero |
| D. | Determined by the battery emf |
| Answer» D. Determined by the battery emf | |
| 115. |
How is the capacity rating of stationary capacitors determined? |
| A. | kVAR |
| B. | kVA |
| C. | kW |
| D. | kWh |
| Answer» B. kVA | |
| 116. |
In the circuit shown in the figure below, the current through the 28 Ω resistor will be |
| A. | 1 A |
| B. | 2 A |
| C. | 4 A |
| D. | 8 A |
| Answer» C. 4 A | |
| 117. |
In the circuit shown below, the voltage and current sources are ideal. The voltage Vout across the current source, in volts, is |
| A. | 0 |
| B. | 5 |
| C. | 10 |
| D. | 20 |
| Answer» E. | |
| 118. |
For a circuit shown below calculate the value of i1? |
| A. | \(\frac{{43}}{{160}}mA\) |
| B. | \(\frac{{117}}{{32}}\;mA\) |
| C. | \(\frac{{117}}{{22}}mA\) |
| D. | \(\frac{{117}}{{11}}mA\) |
| Answer» B. \(\frac{{117}}{{32}}\;mA\) | |
| 119. |
Determine the ohmmeter value in the given network when R = 16 Ω |
| A. | 42 Ω |
| B. | 22 Ω |
| C. | 12 Ω |
| D. | 38 Ω |
| Answer» D. 38 Ω | |
| 120. |
In the circuit shown below, what will be the voltage at the dependent source (current source)? |
| A. | 2/3 V |
| B. | 2 V |
| C. | 3/2 V |
| D. | 4 V |
| Answer» C. 3/2 V | |
| 121. |
Find I1 in the following circuit. V1 = V2 = 1 V: |
| A. | 0.1 A |
| B. | 0.4 A |
| C. | 0.3 A |
| D. | 0.2 A |
| Answer» E. | |
| 122. |
A resistor measures 4Ω at 40°C and 6Ω at 80°C. at T = 0°C the resistor will measure |
| A. | 1.5Ω |
| B. | 2Ω |
| C. | 3Ω |
| D. | 4Ω |
| Answer» C. 3Ω | |
| 123. |
In star to delta transformation, |
| A. | Ra = R1 + R2 + (R2 R1)/R3) |
| B. | Ra = R2 + R3 + (R2 R3)/R3) |
| C. | Ra = R2 + R3 + (R2 R3)/R1) |
| D. | Ra = R2 + R32 + (R1 R2)/R3) |
| Answer» D. Ra = R2 + R32 + (R1 R2)/R3) | |
| 124. |
IN the circuit the value of ix is |
| A. | 2 A |
| B. | -0.6 A |
| C. | 2.6 A |
| D. | 1.4 A |
| Answer» E. | |
| 125. |
In the given circuit, each resistor has a value equal to 1 Ω.What is the equivalent resistance across the terminals |
| A. | 1/6 Ω |
| B. | 1/3 Ω |
| C. | 9/20 Ω |
| D. | 8/15 Ω |
| Answer» E. | |
| 126. |
Kirchhoff's current law is based on the conservation of |
| A. | energy |
| B. | momentum |
| C. | charge |
| D. | mass |
| Answer» D. mass | |
| 127. |
A copper wire is 1 m long and has a uniform cross section of 0.1 mm2. The resistance of wire at room temperature is 0.171 Ω. What is the resistivity of the material? |
| A. | 1.71 × 10-6 Ωm |
| B. | 1.71 × 10-7 Ωm |
| C. | 1.71 × 10-8 Ωm |
| D. | 1.71 × 10-9 Ωm |
| Answer» D. 1.71 × 10-9 Ωm | |
| 128. |
If three inductors are connected in parallel, then which of the following is correct? |
| A. | Power across all the inductors will be same |
| B. | Thermal loss across all the inductors will be same |
| C. | Current across all the inductors will be same |
| D. | Voltage across all the inductors will be same |
| Answer» E. | |
| 129. |
A voltage source and two resistors are connected in parallel as in the given circuit. Suppose that Vs = 150 V, R1 = 50 Ω and R2 = 25 Ω. Find the currents i1 and i2 in each resistor. |
| A. | i1 = 3 A and i2 = 6 A |
| B. | i1 = -3 A and i2 = 6 A |
| C. | i1 = 3 A and i2 = -6 A |
| D. | i1 = 6 A and i2 = 3 A |
| Answer» D. i1 = 6 A and i2 = 3 A | |
| 130. |
For the following circuit, calculate the power supplied by the source. |
| A. | 8.1 W |
| B. | 1.8 W |
| C. | 5.4 W |
| D. | 2.7 W |
| Answer» D. 2.7 W | |
| 131. |
In the given circuit, the values of V1 and V2 respectively are |
| A. | 5V, 25V |
| B. | 10V, 30V |
| C. | 15V, 35V |
| D. | 0V, 20V |
| Answer» B. 10V, 30V | |
| 132. |
A coil with 10 Ω resistance and 2 H inductance is connected to a 50 V battery. What will be the energy stored in the coil? |
| A. | 25 J |
| B. | 50 J |
| C. | 75 J |
| D. | 100 J |
| Answer» B. 50 J | |
| 133. |
Find the resistance between terminals A and B in the electric circuit of below figure: |
| A. | 30 Ω |
| B. | 19 Ω |
| C. | 50 Ω |
| D. | 100 Ω |
| Answer» C. 50 Ω | |
| 134. |
A resistance is rated for 2.5 kΩ, 1 watt. Determine its maximum voltage and current ratings. |
| A. | 100 V, 100 mA |
| B. | 50 V, 200 mA |
| C. | 100 V, 10 mA |
| D. | 50 V, 20 mA |
| Answer» E. | |
| 135. |
Identify the source that has the following symbol. |
| A. | Current-controlled voltage source |
| B. | Voltage-controlled voltage source |
| C. | Voltage-controlled current source |
| D. | Current-controlled current source |
| Answer» D. Current-controlled current source | |
| 136. |
For the circuit shown in the figure, the value of voltage v(t) is: |
| A. | aeat + bebt |
| B. | eat + ebt |
| C. | eat - ebt |
| D. | aeat - bebt |
| Answer» B. eat + ebt | |
| 137. |
A resistance of 10 Ω is connected in series with two resistance, each of 15 Ω arranged in parallel. What resistance must be shunted across this parallel combination so that the total current taken shall be 1.5 A with 20 V applied voltage? |
| A. | 8 Ω |
| B. | 12 Ω |
| C. | 5 Ω |
| D. | 6 Ω |
| Answer» E. | |
| 138. |
Loading of a cable is done to 1. Increase its inductance2. Increase its leakage resistance3. Decrease its capacitance4. Achieve distortionless condition |
| A. | 1, 2, 3 and 4 |
| B. | 1 and 2 only |
| C. | 2 and 3 only |
| D. | 1 and 4 only |
| Answer» E. | |
| 139. |
Calculate Ceq of the circuit given below? |
| A. | \(\dfrac{{17}}{3}F\) |
| B. | \(\dfrac{{119}}{{38}}F\) |
| C. | 5 F |
| D. | 4 F |
| Answer» C. 5 F | |
| 140. |
An air-cored solenoid has 100 turns and is 1 m long. If the area of the cross section is 100 cm2, what will be its self-inductance (in μH)? |
| A. | 400 π |
| B. | 4 π |
| C. | 40 π |
| D. | 0.4 π |
| Answer» D. 0.4 π | |
| 141. |
In a resistor, the first three bands from left to right have colours yellow, violet and red. What is the value of the resistor in ohms. |
| A. | 6700 |
| B. | 540 |
| C. | 52000 |
| D. | 4700 |
| Answer» E. | |
| 142. |
Determine the value of VA, VB, BC, VD, VE.VA denotes the voltage difference of point A with respect to ground. Similarly, for others. |
| A. | +16 V, +16 V, +10 V, 0 V, -2 V |
| B. | +16 V, +10 V, +16 V, 0 V, -2 V |
| C. | +10 V, +16 V, +10 V, 0 V, -2 V |
| D. | +16 V, +16 V, +10 V, -4 V, -2 V |
| Answer» B. +16 V, +10 V, +16 V, 0 V, -2 V | |
| 143. |
Consider the following circuit determine the equivalent resistance between A and B> |
| A. | 15.76 Ω |
| B. | 1.63 Ω |
| C. | 23.52 Ω |
| D. | 2.04 Ω |
| Answer» D. 2.04 Ω | |
| 144. |
Kirchhoff's voltage law is a consequence of |
| A. | Conservation of Charge |
| B. | Conservation of Energy |
| C. | Conservation of Momentum |
| D. | Conservation of Mass |
| Answer» C. Conservation of Momentum | |
| 145. |
Capacitor that can have the highest capacitance value is |
| A. | Mica |
| B. | Paper |
| C. | Electrolytic |
| D. | Ceramic |
| Answer» B. Paper | |
| 146. |
Kirchoff’s law fails in the case of |
| A. | Non-linear networks |
| B. | Linear networks |
| C. | Dual networks |
| D. | Distributed parameter networks |
| Answer» E. | |
| 147. |
An iron cored coil with 1000 turns generates a magnetic flux of 500 μwb in the core while carrying an electric current of 50 A. What will be the self-inductance of the coil? |
| A. | 0.01 H |
| B. | 0.1 H |
| C. | 0.1 mH |
| D. | 0.01 mH |
| Answer» B. 0.1 H | |
| 148. |
Find the capacitive reactance of a 0.63 μF capacitor when connected to 230 V, 50 Hz supply. |
| A. | 5.05 MΩ |
| B. | 5.05 kΩ |
| C. | 50.5 MΩ |
| D. | 50.5 kΩ |
| Answer» C. 50.5 MΩ | |
| 149. |
Consider the following factors:1. Number of turns of the coil2. Length of the coil3. Area of cross-section of the coil4. Permeability of the coreOn which of the above factors does inductance depend? |
| A. | 1, 2 and 3 only |
| B. | 1, 3 and 4 only |
| C. | 1, 2, 3 and 4 |
| D. | 2 and 4 only |
| Answer» D. 2 and 4 only | |
| 150. |
A capacitor has a capacitance of 5 microfarad. What is the stored energy in the capacitor, if DC voltage of 100 V is applied across it? |
| A. | 25 Joules |
| B. | 25/100 Joules |
| C. | 250/100 Joules |
| D. | 2.5/100 Joules |
| Answer» E. | |