Correct Answer:- Option-é
Question82:-The light of Mercury Vapour Lamp is
‘AcRedish orange
B:-Greenish
C-Redish blue
D-White with bluish green

Correct Answer: Option-D

‘Question83:-To get pink colour in Neon sign Lamp chemical powder coated in the inner side of the tube.

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B:-Zine silicate
C-Cadmium borate
D-Calcium silicate
Correct Answer:- Option-C
Question84:-Drop test of an armature is used for testing
‘Ac Number of யாக
B:-Correct resistance
Short and open circuits
D-All of the above
Correct Answer:- Option-D
Question85:-Humming sound produced by a motor is due to
AcLow voltage
B:-Shorted field or armature winding
ലിയ conductor
D-Open field conductor
Correct Answer:- Option ®
Question86:-Current sensing single phasing preventers are suitable for
‘As Constant voltage application motor
B:-Constant load motors
C:Variable voltage application motors
D-All of the above
Correct Answer:- Option ®
Question87:-The Terminals of a GTO are
AcAnode, Cathode, Gate
B:-Collector, Emitter, Gate
Source, Drain, Gate
D-Collector, Base, Emitter
Correct Answer:- Option-é
Question88:-In DC generator metal graphite brushes are used for
‘AcHigh current and high voltage application
B:-Low current and low voltage application
C-High current and low voltage application
D-Low current and high voltage application

Correct Answer: Option-C

‘Question89:-Which of the following is not a standard accuracy class of potential transformers 7

Correct Answer: Option:

‘Question90:-In Electrician Solder the percentage of Tin and Lead is