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Voltage required to operate the Neon sign tubes depends upon :
{A) Diameter of the tube (18) Gases in the tube
(0) Length of the tube (D) Thickness of the tube

Soldering of a Britannia joint is a necessity to avoid loosening of the joint due to :
(4) Vibrations and change in atmospheric temperature
{B) Corrosion due to galvanic action
)0 Corrosion due to atmospheric changes
(M Overheating

The testing of wiring installation for insulation resistance to ensure that :
(ಹಿ) All conductors have high ohmic values in the circuit
(B) All outlet points are earthed properly to groind
)© Leakage current beyond the stipulated value does not flow to earth
(D) Live and neutral conductors in the installation are continuous

-Braking torque in energy meter is produced to :

( Brake the instrument.

(B) Bring energy meter to stand still
(0 Safeguard it against creep

(D) Maintain steady speed and equal to driving torque |

The scale of dynamometer type wattmeter is of :
(ಗಿ) Uniform scale (8) Logarithmic scale
(C) Non-linear scale (D) Square law scale

The standard secondary voltage for a PT used in power system in :

(4) 1४ ® 5V
© 50V യു 110V
Which instrument always indicates true r.m.s. value irrespective of the waveform?
(^) Moving iron meter (18 Digital voltmeter
(C) Thermocouple meter (D) None of the above

A voltmeter gives inacéurate reading to measure the drop across a low resistance because :
(A) The higher scale has been selected
(B) The current drawn by the meter is too low
(C) The sensitivity of the meter is too low
(D) None of the above

5 035/2016
[15-00]