11-06-2018, 11:56 PM

Solved question paper of UPSC conducted IES/ ESE Engineering Services Preliminary examination 2018 for EE- Electrical Engineering.

Some Model Questions from the ESE 2018 EE Paper

1. In a sample of 100 students, the mean of the marks (only integers) obtained by them in a test is 14 with its standard deviation of 2.5 (marks obtained can be fitted with a normal distribution). The percentage of students scoring 16 marks is

(a) 36Â Â Â (b) 23

© 12Â Â Â (d) 10

(Area under standard normal curve between z = 0 and z= 0.6 is 0.2257; and between z = 0 and z = 1.0 is 0.3413)

2. In Face-Centered Cubic structure (FCC), what number of atoms is present in each unit cell?

(a) 18

(b) 16

© 14

(d) 12

3. When an alternating voltage of a given frequency is applied to a dielectric material, dissipation of energy occurs due to

1.Â Â Â Continual change in the orbital paths of the electrons in the atomic structure.

2.Â Â Â A small conduction current through the dielectric.

3.Â Â Â Eddy currents.

Which of the above statements are correct?

(a) 1,2 and 3Â Â Â (b) 1 and 2 only

© 1 and 3 onlyÂ Â Â (d) 2 and 3 only

4. In a circuit-breaker, the arc is produced due to

1.Â Â Â Thermal emission

2.Â Â Â High temperature of air

3.Â Â Â Field emission

Which of the above statements are correct?

(a) 1,2 and 3Â Â Â

(b) 2 and 3 only

© 1 and 2 onlyÂ Â Â

(d) 1 and 3 only

5. At what power factor will a lossless line with a reactance of 0.6 pu exhibit zero regulation given that the sending end voltage is 1.0 pu?

(a) 0.800 lagÂ Â Â (b) 0.800 lead

© 0.954 leadÂ Â Â (d) Unity p.f.

For Complete question paper and solutions download the pdf files given below.

Some Model Questions from the ESE 2018 EE Paper

1. In a sample of 100 students, the mean of the marks (only integers) obtained by them in a test is 14 with its standard deviation of 2.5 (marks obtained can be fitted with a normal distribution). The percentage of students scoring 16 marks is

(a) 36Â Â Â (b) 23

© 12Â Â Â (d) 10

(Area under standard normal curve between z = 0 and z= 0.6 is 0.2257; and between z = 0 and z = 1.0 is 0.3413)

2. In Face-Centered Cubic structure (FCC), what number of atoms is present in each unit cell?

(a) 18

(b) 16

© 14

(d) 12

3. When an alternating voltage of a given frequency is applied to a dielectric material, dissipation of energy occurs due to

1.Â Â Â Continual change in the orbital paths of the electrons in the atomic structure.

2.Â Â Â A small conduction current through the dielectric.

3.Â Â Â Eddy currents.

Which of the above statements are correct?

(a) 1,2 and 3Â Â Â (b) 1 and 2 only

© 1 and 3 onlyÂ Â Â (d) 2 and 3 only

4. In a circuit-breaker, the arc is produced due to

1.Â Â Â Thermal emission

2.Â Â Â High temperature of air

3.Â Â Â Field emission

Which of the above statements are correct?

(a) 1,2 and 3Â Â Â

(b) 2 and 3 only

© 1 and 2 onlyÂ Â Â

(d) 1 and 3 only

5. At what power factor will a lossless line with a reactance of 0.6 pu exhibit zero regulation given that the sending end voltage is 1.0 pu?

(a) 0.800 lagÂ Â Â (b) 0.800 lead

© 0.954 leadÂ Â Â (d) Unity p.f.

For Complete question paper and solutions download the pdf files given below.

**Attached Files**

IES 2018 Preliminary Question Paper-General Studies & Engineering Aptitude.pdf (Size: 521.18 KB / Downloads: 223)

IES 2018 Preliminary Exam General Studies & Engineering Aptitude Answer Key.pdf (Size: 34.55 KB / Downloads: 207)

IES ESE 2018 EE Electrical Engineering Question Paper.pdf (Size: 4.28 MB / Downloads: 288)

UPSC IES 2018 EE- Electrical Engineering Solutions.pdf (Size: 10.92 MB / Downloads: 394)