1. What will be the value of resistance (in kilo-ohms) of a carbon composition resistor having color-coding of brown-black-brown-black ?

400

200

300

100

Answer: 100

Explanation:


2. Which of the following is NOT a type of capacitor ?

Ceramic

Electrolytic

Film

Wire wound

Answer: Wire wound

Explanation:


3. Which of the following is TRUE in case of Substitution theorem ?

The initial condition of the rest of the circuit changes, if a network element is replaced by a voltage source having an equal voltage as the voltage across the element at every instant of time

The initial condition of the rest of the circuit changes, if a network element is replaced by a voltage source having an equal current as the voltage across the element at every instant of time

The initial condition of the rest of the circuit remains same, if a network element is replaced by a voltage source having an equal voltage as the voltage across the element at every instant of time.

The initial condition of the rest of the circuit changes, if a network element is replaced by a voltage source having an equal voltage as the current across the element at every instant of time.

Answer: The initial condition of the rest of the circuit remains same, if a network element is replaced by a voltage source having an equal voltage as the voltage across the element at every instant of time.

Explanation:


4. Which of the following theorem states that the sum of instantaneous power in ‘n‘ number of branches of an electrical network is zero ?

Compensation

Maximum power transfer

Superposition

Tellegen‘s

Answer: Tellegen‘s

Explanation:


5. Kirchhoff's voltage law is based on which of the following principle ?

Conservation of charge

Conservation of energy

Conservation of force

Conservation of momentum

Answer: Conservation of energy

Explanation:


6. The S.I unit of electric charge is ?

Henry

Coulomb

Tesla

Weber

Answer: Coulomb

Explanation:


7. Which of the following is a diamagnetic material ?

Aluminium

Oxygen

Lead

Nickel

Answer: Lead

Explanation:


8. Which of the following material shows paramagnetism ?

Copper

Iron

Titanium

Silver

Answer: Titanium

Explanation:


9. Determine the intensity of magnetization (in A/m) of a magnet, when its pole strength is 100 Wb and has a pole area of 70 sq. m. ?

4.98

3.65

2.53

1.43

Answer: 1.43

Explanation:


10. Hysteresis loss occurring in a material does NOT depend on which of the following parameters ?

Hysteresis constant

Magnetic flux density

Frequency

Reluctivity

Answer: Reluctivity

Explanation: