Important Question Answer For HPSSC Lineman Exam Set-4
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1. Reciprocal of reluctance is
(A) Susceptibility
(B) Permeability
(C) Permeance
(D) Reluctivity
2. The property of a material which opposes the creation of magnetic flux in it is known as
(A) Magnetomotive force
(B) Reluctance
(C) Permeance
(D) Reluctivity
3. A property of material which opposes the creation of magnetic flux in it is known as _______
(A) Magnetomotive force
(B) Reluctance
(C) Permeance
(D) Reluctivity
4. Direction of forces on a conductor in a magnetic field is determined by_______
(A) Fleming’s right hand rule
(B) Fleming’s left hand rule
(C) Right hand thumb rule
(D) None of the above
5. In electrical machines laminated cores are used with a view to reducing______
(A) Hysteresis loss
(B) Eddy current loss
(C) Copper loss
(D) All of the above
6. Static electromagnetic induction is adopted in_________
(A) Generators
(B) Alternators
(C) Transformers
(D) All of the above
7. The magnitude of induced e.mf. is directly proportional to the
(A) Rate of change of current
(B) Rate of change of flux linkage
(C) Constant value of current
(D) Constant value of flux linkage
8. Eddy currents produced in a core______
(A) Increase useful energy
(B) Create loss of useful energy
(C) Strengthen the magnetic field
(D) None of the above
9. The electrical current is analogous to the magnetic circuit
(A) Flux
(B) Reluctance
(C) Flux density
(D) Permeability
10. For an inductance current is proportional to_______
(A) Magnetic field
(B) Voltage across the inductance
(C) Both magnetic field and voltage across the inductance
(D) Neither magnetic field nor voltage across the inductance