**First Year Engineering Common to all Branches: Basic Electrical Engineering 6**

Subject: Basic Electrical Engineering 6

**Part 6: List for questions and answers of Basic Electrical Engineering**

**Q1. Resistivity of a wire depends on**

a) length

b) material

c) cross section area

d) none of the above

**Q2. Eighteen thousand watts is the same as**

a) 18 μW

b) 18 mW

c) 18 MW

d) 18 kW

**Q3. Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is**

a) r / 2

b) 4 r

c) 2 r

d) r / 4

**Q4. Kirchhoff’s second law is based on law of conservation of**

a) charge

b) energy

c) momentum

d) mass

**Q5. The diameter of the nucleus of an atom is of the order of**

a) 10 -31 m

b) 10 -25 m

c) 10 -21 m

d) 10 -14m

**Q6. The mass of proton is roughly how many times the mass of an electron?**

a) 184,000

b) 184,00

c) 1840

d) 184

**Q7. The formula to find I when the values of V and R are known is**

a) I = VR

b) I = R/V

c) V = IR

d) I = V/R

**Q8. Two bulbs marked 200 watt-250 volts and 100 watt-250 volts are joined in series to 250 volts supply. Power consumed in circuit is**

a) 33 watt

b) 67 watt

c) 100 watt

d) 300 watt

**Q9. Ampere second could be the unit of**

a) power

b) conductance

c) energy

d) charge

**Q10. Which of the following is not the same as watt?**

a) joule/sec

b) amperes/volt

c) amperes x volts

d) ( amperes )2 x ohm

**Q11. One kilowatt hour of electrical energy is the same as**

a) 36 x 10^5 watts

b) 36 x 10^s ergs

c) 36 x 10^5 joules

d) 36 x 10^5 B.T.U

**Q12. An electric current of 5 A is same as**

a) 5 J / C

b) 5 V / C

c) 5 C / sec

d) 5 w / sec

**Q13. An electron of mass m kg and having a charge of e coulombs travels from rest through a potential difference of V volts. Its kinetic energy will be**

a) ev Joules

b) mev Joules

c) me / V Joules

d) V / me Joules

**Q14. The value of the following is given by 100 (kilo ampere ) x ( micro ampere ) 100 milli ampere * 10 ampere**

a) A

b) A

c) 10A

**Q15. A circuit contains two un-equal resistances in parallel**

a) current is same in both

b) large current flows in larger resistor

c) potential difference across each is same

d) smaller resistance has smaller conductance

**Q16. Which of the following bulbs will have the least resistance ?**

a) 220 V, 60 W

b) 220 V, 100 W

c) 115 V, 60 W

d) 115 V, 100 W

**Q17. The ratio of the resistance of a 100 W, 220 V lamp to that of a 100 W, 110 V lamp will be nearly**

a) 4

b) 2

c) 1 / 2

d) 1 / 4

**Q18. The resistance of a 100 W, 200 V lamp is**

a) 100 ohm

b) 200 ohm

c) 400 ohm

d) 1600 ohm

**Q19. Two 1 kilo ohm, 1/2 W resistors are connected in series. Their combined resistance value and wattage will be**

a) 2 k?, 1/2 W

b) 2 k?, 1 W

c) 2 k?, 2 W

d) l k?, 1/2 W

**Q20. Conductance is expressed in terms of**

a) ohm / m

b) m / ohm

c) mho / m

d) mho

**Part 6: List for questions and answers of Basic Electrical Engineering**

Q1. Answer: b

Q2. Answer: d

Q3. Answer: b

Q4. Answer: b

Q5. Answer: d

Q6. Answer: c

Q7. Answer:

Q8. Answer: b

Q9. Answer: d

Q10. Answer: b

Q11. Answer: c

Q12. Answer: c

Q13. Answer: c

Q14. Answer:

Q15. Answer:

Q16. Answer: d

Q17. Answer: a

Q18. Answer: c

Q19. Answer: b

Q20. Answer: d