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38.

The unit of commercial electrical energy is measured in :
മു KW യു 7۸
மங (D) Voelt ampere

When the dise of an energy meter is rotating even without connecting any load, the error is
called?

(ക) Creeping error (B) Phase error
(C) Friction error (D) Temperature error

An electrical circuit that has infinity resistance shown in megger is called a
eireuit.

(ಯ) anopen (B) short
(C) aground ©(
For pipe earthing the minimum internal diameter of galvanized iron or steel pipe required is :
(ಯ) 12.5mm (B) 16 mm
(C) 18 mm (D) 38 mm
The heat proof insulating material used for heater base is :
(ಯ) Mica (B) Porcelain _
(C) Asbestos (D) Glass wool

The thermostat in an automatic electric iron will :
(ക) Reduce the current to control temperature
(B) Change the current flow through element
(0 Regulate the heat by switching ON-OFF
(D) Switch ON and OFF the indicating lamp

What type of motor is used in a food mixer?
(80 DC shunt motor (B) Universal motor
(©) Capacitor start motor (D) Permanent capacitor

If the voltage applied at the terminals of 230V single phase 1200 mm sweep ceiling fan is
120V then the fan :

(A) Will not run (B) Will run at normal speed
)© Will be heated (D) Will run slowly

The sweep of the ceiling fan is determined by :
(A) Length of the blade from fan centre
(ए) The diameter of the circle formed by the blade tips of the fan
(0 Dreadth of धाह blades
(0) The distance between adjacent blade tips

101/2016 6 A