055/2016

40. The of the capacitor in a fan is to be

A) incri the speed B) protect the fan when fault occurs
C) control the speed D) give phase shift
41. AH.P.M.V. lamp gives
A) 10 lumens/watt B) 20lumensiwatt
C) 50 lumens/watt D) 60 lumens/watt

42. Atthe time

of starting the sodium vapor lamp gives the color of light is

A) natural day light B) reddish color
C) greenish color D) yellowish light
43, Centre tapping of the high voltage transformer must be earthed to
A) limit the operative current B) reduce the operative voltage
C) provide safety of operator D) eliminating inference
44, The possible minimum reading which can be taken by 0-25 m.m. of an outside

micrometer is
A) 0.01 m.m. 8) 0.1 m.m.
C) 0.5m. D) 1.0m.m,
45. The bending angle of the hard drawn bare copper conductor for britannia joint
should be
A) 60° B) 90°
C) 45° D) 180°
46. In soldering aluminum cables with a ferrule joint it is advisable to use
A) an aluminium ferrule B) acopper ferrule
C) atinferrule D) an in-oxidisable steel ferrule

47. The distan

e between clips in horizontal runs shall not exceed

‎B) 15¢c.m.‏ ۰ھ
‎C) 20c.m. D) 25c.m.‏

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