ELECTRICAL ENGINEERS PRE-BOARD EXAMINATION MARCH 2018

In Delta connected circuit, when one resistor is open, then power will be

• 0

• increased by a factor of 3

• decreased by a factor of 3

• remain unchanged

Which does not belong

• lines per square centimeter

• maxwells per square centimeter

• flux

• gauss

In a shunt motor, what is the relative connection of the armature winding with respect to the field winding?

• series

• parallel-series

• series-parallel

• parallel

What is considered as the most important value of a sine wave?

• Effective value

• Peak value

• Average value

• Instantaneous value

For a 3-phase load balanced condition, each phase has the same value of _

• impedance

• resistance

• power factor

• all of these

Assuming the most efficient technologies for the extraction of energy, the fuel with the largest known reserves is

• Coal

• Oil

• Natural gas

• Nuclear

A capacitive load always has a __________ power factor

• Leading

• Lagging

• Zero

• Unity

In hydro electric power plant, it is use to prevent the sudden rise and drop of water pressure

• Penstock

• Intake tower

• Dam

• Surge tank

The basis where the flow of current is from positive to negative was derived from __________

• Superstition

• Tradition

• Scientific

• Convention

By using two wattmeter method, power can be measured in

• 3-phase, 2-wire

• 3-phase, 3-wire

• 3-phase, 4-wire

• All of these