Roll Number
WORLD SKILL CENTER, BHUBANESWAR
SCHOOL OF ENGINEERING
SEPT. 2023 INTAKE
Advanced Certificate
Mechanical and Electrical Services
EI&T
End Module Theory
One Hour and 30 Minutes
Full Marks-40
Name
Section Date Time
INSTRUCTIONS TO CANDIDATES
1. Do not open this question paper until you are told to do so
2. Write your WSC Roll Number clearly at the top right corner. Please write your
name and section in the space provided above Box.
3. This paper consists of 40 Multiple Choice Questions with four alternative
provided as option (A),(B),(C) and (D)
4. All questions carry equal marks. There is no negative marking.
5. Answers are to be marked on OMR answer sheet following the instructions
provided there upon.
6. Return this question paper and the OMR answer sheet at the end of the
examination.
________________________________________________________________
This Question paper consists of 6 printed pages
excluding cover page
Q.1. Before working on household or commercial electric circuits always
a) Disconnect the power supply b) Pull at the cord of the unit
c) Connect it first to the correct supply d) Check the rating of protective device
Q.2. Keep tools sharp and clean
a) for safe keeping b) for displaying purpose
c) to last for longer period d) for better and safer performance
Q.3.Standard value of earth resistance is
a) 5 ohm b) 20 ohm c) 50 ohm d) None
Q.4.An instrument adjusted to measure a voltage within a 240V range will be
ruined if connected to a supply of
a) 55V b) 110 V c) 230V d)
440V
Q.5. Wet floor is dangerous to electricians to work on because
a) it is slippery b) it is not convenient
c) it has low resistance to earth d) it has high resistance to earth.
Q.6.A drawing related to the plan of a site or buildings is known as
a) Layout drawing b) Wiring diagram
c) Block diagram d) Schematic diagram
Q.7.Wiring system consists of
a) conductor , earthing facilities and insulation
b) earthing facilities , Wiring accessories and insulation
c) Conductor , earthing facilities , wiring accessories and insulation
d) Conductor , earthing facilities, mechanical protection, wiring accessories and
insulation
Q.8. Identify the electrical Symbol as shown
a) Single way switch b) Two way switch
c) Fuse d) circuit breaker
Q.9. Identify the electrical Symbol as shown
a) Bettery b) Generator c) EMF d)
Voltage
Q.10. Identify the electrical Symbol as shown
a) Single way switch b) Connector
c) Fuse d) circuit breaker
Q.11. Three resistors 1 ohms, 2 ohms and 3 ohms are connected in parallel. The
total resistance of the circuit is
a) 6.0 OHM b) 55 OHM c) 0.55 OHM d) 600 OHM
Q.12.Calculate the current For 100 Watt lamp if connected to 230 Volt suppy
assuming resistive load.
a) 1 A b) 10 A c) 5 A d) 0.43 A
Q.13.Ceiling rose should normaly be used only on circuits operating at a voltage
not more than
a) 250V b) 1000V c) 400V d)750V
Q.14.The reason why there is arcing in the glow starter of the fluorescent lamp
is because of
a) reduce current in the ballast b) the low voltage during
starting
c)the high current across the gap between the bimetallic strip d)short circuit of the
ballast
Q.15.The main reason of imposing special requirements on luminairies is to
ensure
a) Work is done in a clean environment. b) No additional repair works
later.
c) Work is completed on time. d) Safety of personnel.
Q.17. Continuity test can be done by using which meter
a) voltmeter b) ammeter c) multi-meter d) frequency
meter
Q.22.Lightning Strokes are __________________ discharge of electrical static.
a) Blue b) Loud c) Visible d) Invisible
Q.23.What is the down conductor Spacing required for protection level 3?
a) 10m b) 15m c) 20m d) 25m
Q.24. Calculate the total resistance between the points A and B?
A) 7.76 ohms B) 8 ohms C) 6.67 ohms D) 7.67 ohms
Q.25. Earth resistance is measured by
A) Volt Meter B) Ammeter C) multi-meter D) Earth Tester
Q.26. One unit of energy consumed is
A) 1 WATT HOUR B) 1000 WATT HOUR C) 100 WATT HOUR
(D)NONE
Q.27. Identify the diagram shown below
(A) Single line diagram (B) Layout Drawing (C) Wiring Diagram (D) None of the
above
Q.28. RCCB Stands for
A) Residual Current Circuit Breaker B) Resistance Current Circuit
Breaker
C) Return current circuit Breaker D) None
Q29. In order to branch out another run from the main conduit run, it is necessary to
install
a. Tee box
b. Cross box
c. Through box
d. End box
Q30. The number of points in light circuit should not exceed
a) 5 b) 2 c) 10 d) 12
Q31. Fuse is used to provide the protection against
a) Ground fault b) Open circuit c) Under voltage d) Short circuit
Q32. In domestic electrical applications, the type of conductor to be used shall be of
a. Silver
b. Gold
c. Aluminium
d. Copper
Q33. What is the meter used for measure the electricity units?
A)Voltmeter B) Ampere hour meter C) kVARH meter D) kWH meter
Q34. What is PPE?
a)People protection element b)Personal prospective equipment
c)Personal protective equipment d)Proper protective equipment
Q35. We connect the fuse in,
a)Phase line b)Neutral line c)Earth line d)Any Line
Q36. Staircase wiring requires what type of switch
a)Four-way switch b)One-way switch c)Two-way switch d)Three-way switch
Q37. Why earthing is necessary?
a)To protect human being & machines b)To reduce the supply voltage
c)Protect furniture in house d)To increase the supply voltage
Q38. A multimeter cannot measure
a) Current b) Dielectric strength c)Capacitance d)Resistance
Q39. The megger is used to check the
a)Insulation resistance b)Properties of conductor
c)Inductance of a coil d) Capacitance
Q40. Incandescent lamp filament is made by.
a)Nichrome wire b)Tungsten wire c)Fuse wire d)Copper wire
