25.

26,

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28.

29.

30.

31.

32,

The phase difference between the currents in the two pressure coils in PF meter is :
(A) Approximately 0° (8) Approximately 90°
(0 ‏٭ جلاعم«‎ (D) Exactly 90°

When a rewound armature is rolled on the surface of a leveled surface plate the armature
stops at the same position of its periphery for each rolling, the portion of armature touching
the surface plate 15 regarded to have :

(ಯ) higher weight than the diametrically opposite portion
(B) lesser weight than the diametrically opposite portion
(¢) equal weight to that of opposite portion

(D) higher weight than the portion 90° to it on any one side

Which one of the following characteristic is NO'T' applicable to synchronous metors?
(ക) Runs at constant speed at all loads
(18) Suitable to supply only mechanical load
)© Can also be used for PF improvement
(D) Not self starting

Which method is generally adopted to measure the power in a three phase imbalanced load
system?

(ಸ) One wattmeter method (B) - Two wattmeter method

{C) Three voltmeter method (D) Three wattmeter method

The colour of light depends upon :

(ಗಿ) Wave length (13) Frequency

(C) Speed of light (D) Frequency and wave length
Which of the following lamp is a cold eathode lamp?

(ಗಿ) Neon lamp (B) Sodium vapour lamp

(9 Mercury vapour lamp () Fluorescent lamp

You have to repair storage type water heater which has steam in the hot water. The poasible
remedy for this trouble can be found by checking :

(ക ‏ال۸‎ points for possible leakages (B) The thermostat setting
(¢ All wiring for loose connections (D) Element for its condition

The reading on a 3 digit millivoltmeter started flashing 21121000817 when connected 807058
a resigtor to measure the mV across it. The reason for flashing of display on millivoltmeter is
that :

‎The battery in the instrument is weak (B) There is no battery in the instrument‏ نف
‎(C) The measured value is over range (D) The display is damaged‏

‎035/2016 6 Sk

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