Basic Electrician Theory MCQ In English ||02||

1. The unit of resistance is

(A) Ohm

(B) Ohm meter

(C) Mho

(D) Simen

Answer - (A) Ohm

2. What is speed of electric current

(A) 3X10⁹ m/min

(B) 3X10⁸ m/s

(C) 3X10¹⁸ m/s

(D) 3X10⁷ m/s

Answer - (B) 3X10⁸ m/s

3. That property of materials which provides ease of electric current flow is called?

(A) Conductivity

(B) Resistivity

(C) Conductivity

(D)Voltage difference

Answer - (A) Conductivity

4. The resistivity of a wire depends ?

(A) on the nature of matter

(B) at length

(C) cross section area of conductor

(D) None of these

Answer - (A) on the nature of matter

5. Whose unit is ampere second?

(A) Power

(B) Conductance

(C) Energy

(D) Charge

Answer - (D) Charge

6. Which of the following is not equal to watts?

(A) Joules/second

(B) ampere/volt

(C) ampere×volt

(D) ampere²×Ohm

Answer - (B) ampere/volt

7. What is the unit of conductance ?

(A) Mho

(B) Ohm/m

(C) m/ohm

(D) mho/m

Answer - (A) Mho

8. Ohm's law does not apply to which of the following ?

(A) on high current

(B) on DC circuits

(C) on low current

(D) on semiconductors

Answer - (D) on semiconductors

9. What will be the resistance of a 100 watt, 100 volt lamp?

(A) 100 Ohms

(B) 100 mho

(C) 200 Ohms

(D) 200 mho

Answer - (A) 100 Ohms

10. Is the unit of specific conductivity?

(A) Mho

(B) Ohm/meter

(C) meter/ohm

(D) mho/meter

Answer - (D) mho/meter

11. What is the unit of specific resistance ?

(A) Ohm

(B) Ohm-cm

(C) Mho

(D) watts

Answer - (B) Ohm-cm

12. Which of the following has a negative temperature coefficient?

(A) Electrolyte

(B) Brass

(C) Mercury

(D) Silver

Answer - (A) Electrolyte

13. 3 Ohm's three resistance is connected triangularly, then any two end will have resistance?

(A) 3/4 Ohm

(B) 4/3 Ohms

(C) 5 Ohms

(D) 2 Ohms

Answer - (D) 2 Ohms

14. One kilowatt of electrical energy will equal ?

(A) 36X10⁵ watts

(B) 36X10⁵ arg

(C) 36X10⁵ Joules

(D) None of these

Answer - (C) 36X10⁵ Joules

15. The negative temperature coefficient of all but one is that substance.

(A) Electrolyte

(B) Gold

(C) Rubber

(D) Paper

Answer - (B) Gold

16. Fuse is added to the circuit?

(A) in series

(B) In parallel

(C) Both A & B

(D) None of these

Answer - (A) in series

17. The capacity of a fuse wire is shown ?

(A) in watts

(B) in kilowatts

(C) Ampere

(D) in Ohm

Answer - (C) Ampere

18. What is a good conductor?

(A) resistance

(B) high conductivity

(C) thermal conductivity

(D) None of these

Answer - (B) high conductivity

19. Silver belt has a tolerance?

(A) ± 5%

(B) ± 10%

(C) + 5%

(D) -10%

Answer - (B) ± 10%

20. Which of the following is negative charge?

(A) Electron

(B) Proton

(C) Neutron

(D) None of these

Answer - (A) Electron

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Electrician Theory MCQ In English ||Part-03||