1. Magnetic field is always mapped out in the form of magnetic ____
(A) Lines of force
(B) Strength
(C) Area
(D) Width
2. Magnetic lines of force always travel from _______.
(A) North to South
(B) Axis
(C) South to North
(D) Horizontal
3. Magnetic flux is denoted by _______.
(A) ω
(B) θ
(C) ∈
(D) φ
4. Increased number of lines means _______ magnetic field.
(A) Wider
(B) Greater
(C) Stronger
(D) Bigger
5. A magnetic field line equals to a _______.
(A) Weber
(B) Watt
(C) Maxwell
(D) Newton
6. One Weber equals to _______ Maxwell.
(A) 1 × 10⁶
(B) 1 × 10⁷
(C) 1 × 10¹⁰
(D) 1 × 10⁸
7. Flux per unit area is called _______
(A) Maxwell
(B) Permeability
(C) Reluctance
(D) Flux density
8. 1 KG = _______ Gauss
(A) 10⁻³
(B) 10⁶
(C) 10³
(D) 10
9. One Weber per square meter is called _______.
(A) Maxwell
(B) Reluctance
(C) Flux density
(D) Tesla
10. Opposition in the production of flux is called _______.
(A) Reluctance
(B) Resistance
(C) Tesla
(D) Lines of force
11. The magnetic lines of force become _______ where the field is strong.
(A) Thinner
(B) Smooth
(C) Parallel
(D) Thicker
12. The magnet made from iron/steel is called _______ magnet.
(A) Permanent
(B) Temporary
(C) Electro
(D) Diamagnetic
13. The magnet made up of soft iron is called _______ magnet.
(A) Soft
(B) Permanent
(C) Temporary
(D) Electro
14. When electricity is passed through a solenoid it becomes _______.
(A) Conductor
(B) Inductor
(C) Magnet
(D) Insulator
15. Like poles of magnet _______ each other.
(A) Repels
(B) Attracts
(C) Both a and b
(D) None of above
16. Opposite poles of magnet _______ each other.
(A) Attract
(B) Repel
(C) Reflect
(D) Neglect
17. Lead, Copper and Bismuth are _______ materials.
(A) Ferro magnetic
(B) Diamagnetic
(C) Para magnetic
(D) Electro-magnetic
18. The magnetic effect of a body on another without physical contact is called magnetic _______.
(A) Induction
(B) Permeability
(C) Reluctance
(D) Conduction
19. 1 ampere turn = _______ Gilbert
(A) 1.27
(B) 1.26
(C) 1.28
(D) 1.29
20. Magnetic field intensity is _______
(A) mmf / L
(B) mmf / A
(C) mmf / I
(D) mmf