Quiz: Electrical Engineering 6 July 2020

Quiz: Electrical Engineering
Exam: SSC JE
Topic: Utilization of electrical energy

Each question carries 1 mark.
Negative marking: 1/4 mark
Time: 10 Minute

Q1. Which of following method is not employed for lighting Calculation?
(a) Inverse square law
(b) Stefan Tube method
(c) Watts per square method
(d) Lumen method

Q2. Which of the following will need lowest level of illumination?
(a) Display
(b) fine engraving
(c) Railway platform
(d) Auditorium

Q3. A mercury lamp vapour lamp gives
(a) pink light
(b) Yellow light
(c) greenish blue light
(d) White light

Q4. Principles are used in street lighting is
(a) diffusion and specular reflection
(b) induction
(c) electromagnetic
(d) electrostatic

Q5. High pressure mercury discharge lamps are not used in
(a) park
(b) in the street light of play ground
(c) stage lighting
(d) drawing room

Q6. Which of the following lamp gives nearly monochromatic light?
(a) Sodium vapour lamp
(b) GLS lamp
(c) Tube light
(d) Mercury vapour lamp

Q7. Power factor is highest in case of
(a) mercury arc lamp
(b) sodium vapour lamp
(c) Tube lights
(d) GLS lamp

Q8. To prevent excessive brightness which type of lighting is used
(a) direct
(b) indirect
(c) general
(d) local

Q9. The most important factor with respect to lighting quality is
(a) color
(b) glare
(c) illumination
(d) uniform lighting

Q10. Arc can be produced by
(a) AC current only
(b) DC current only
(c) Either AC & DC current
(d) none of the above

Solution

S1. Ans. (b)
Sol. Stefan Tube method is not used for lighting calculation method.

S2. Ans. (c)
Sol. Railway platform

S3. Ans. (c)
Sol. greenish blue light

S4. Ans. (a)
Sol. diffusion and specular reflection

S5. Ans. (d)
Sol. drawing room

S6. Ans. (a)
Sol. Sodium vapour lamp

S7. Ans. (d)
Sol. Power factor is highest in case of GLS lamp.

S8. Ans. (b)
Sol. Indirect

S9. Ans. (b)
Sol. Glare

S10. Ans. (c)
Sol. Either AC or DC

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