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.   Continual change in the orbital paths of the electrons in the atomic structure.
2.   A small conduction current through the dielectric.
3.   Eddy currents.
Which of the above statements are correct?
(a) 1,2 and 3Â Â Â (b) 1 and 2 only
© 1 and 3 only   (d) 2 and 3 only
4. In a circuit-breaker, the arc is produced due to
1.   Thermal emission
2.   High temperature of air
3.   Field emission
Which of the above statements are correct?
(a) 1,2 and 3Â Â Â
(b) 2 and 3 only
© 1 and 2 only  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 lag   (b) 0.800 lead
© 0.954 lead   (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.   Continual change in the orbital paths of the electrons in the atomic structure.
2.   A small conduction current through the dielectric.
3.   Eddy currents.
Which of the above statements are correct?
(a) 1,2 and 3Â Â Â (b) 1 and 2 only
© 1 and 3 only   (d) 2 and 3 only
4. In a circuit-breaker, the arc is produced due to
1.   Thermal emission
2.   High temperature of air
3.   Field emission
Which of the above statements are correct?
(a) 1,2 and 3Â Â Â
(b) 2 and 3 only
© 1 and 2 only  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 lag   (b) 0.800 lead
© 0.954 lead   (d) Unity p.f.
For Complete question paper and solutions download the pdf files given below.