1. . The active power of a 56” ceiling fan is
(A) 80W
(B) 100W
(C) 150W
(D) 200W
2. . What are the names of pins of 3 pin socket
(A) N, L, E
(B) T, S, R
(C) R, Y, B
(D) all
3. . In a room the number of fans depends on
(A) Size of fan
(B) Size of ventilation
(C) Size of room
(D) a & c
4. . The points considered during planning and design of electrical installations
(A) Load calculation
(B) All
(C) Size of cable
(D) Wiring selection
5. . The points considered during design of electrical installation;
(A) Safety rules
(B) Availability of accessories
(C) Labour required
(D) All
6. . The minimum size of cable for a power circuit is
(A) 7/0.044”
(B) 7/0.036”
(C) 3/0.029”
(D) 7/0.029”
7. . How many number of 5A sockets can be used on 15A sub-circuit
(A) 2
(B) 5
(C) 4
(D) 3
8. . The ceiling fan is placed at least height of
(A) 2m
(B) 2.5m
(C) 2.75m
(D) 3m
9. . In a sub-circuit, the maximum load of incandescent lamps can be
(A) 800W
(B) 600W
(C) 500W
(D) 100W
10. . The allowable voltage drop of a cable are
(A) 2%
(B) 3%
(C) 5%
(D) 2.5%
11. . In a multistory building, The main distribution board must be placed at
(A) Ground floor
(B) First floor
(C) Top floor
(D) Any where
12. . According to I.E.E.E. the load of a final sub-circuit must not increase from
(A) 15A
(B) 10A
(C) 20A
(D) 25A
13. . If load current is greater than rated current of a cable then voltage drop will be
(A) Normal
(B) All
(C) Lesser
(D) Higher
14. . The factors considered for selecting a cable for a motor
(A) Full load current
(B) Length of circuit
(C) All
(D) Temperature
15. . According to electricity rules the part must be earthed
(A) Metallic cover
(B) Metallic pipes
(C) a & b
(D) Plastic covers
16. . According to I.E.E.E. regulation D-1
(A) Neutral must be earthed
(B) Protection from leakage current
(C) Protection of machines
(D) Protection of worker
17. . The regulation not implemented on isolated metallic parts
(A) D-2
(B) D-5
(C) D-4
(D) D-3
18. . According to 54 electricity rule, this must be earthed
(A) Metallic casings
(B) All
(C) Neutral
(D) Motors & generators
19. . At the time of installation, light wiring and power wiring must be
(A) Same circuit
(B) Separate circuit
(C) a & b
(D) None of these
20. . The load factor of a cable is always
(A) Always 1
(B) 1 or less than 1
(C) 1 or less than 1
(D) Always greater than 1
21. . If declared supply voltages are 220V, the permissible voltage drop of a cable will be;
(A) 2%
(B) 1.25%
(C) 3.5%
(D) 2.5%