Explore topic-wise MCQs in Electrical Engineering Questions.

In metal arc welding, the filler material required is

The haulage capacity is more for

The slope of the speed - time curve at any point gives the

The magnitude for the tractive effort which is required for the propulsion of the train depends on

A low frequency supply is given to the single phase AC system for track electrification because

With increase in temperature of the body, the emission of light waves is

The lighting system of almost all the earlier coaches and all the newly manufactured coaches has

Seam welding is not used for the

For best visual performance, the range of brightness within the field of vision

Which type of heating is used for sterilization?

Throwing power can be improved by

The temperature produced in indirect arc furnace is

The dielectric strength of air gap is

In tramways,

Electroplating is done

In inert gas metal arc welding,

The scheduled speed of a train can be increased by

In mail line train services, the

Voltage required for butt welding is

During plugging, the speed of the motor gradually decreases. If the supply to the motor is not cut - off then the

For running at half of the maximum speed, the batteries of battery electric drive are connected in

For regenerative braking, the motor which is not suitable is

The ratio of the distance between any two stops and the sum of the time of run and the time of stop at one station is known as

In case of dc series motor, the torque can be found from

Eureka is an alloy of

The heat required by the weld is produced due to the contact resistance between the two pieces and is

Advantage of using electron beam welding is / are

In salt bath heating, the current are allowed to flow only through the

Non - consumable electrodes are made of

In resistance furnaces, the temperature can be controlled by

A good heating element should have

An ac timer circuit is used to control the number of cycles for which the power may be supplied to the weld. In this, the time required for the voltage to fall by a given amount is

Maintenance factor is the ratio of

The power required for electro-deposition is

The metal oxide rectifier used for electrolytic process is placed along with the transformer

For avoiding hard and long shadows,

The main electrode of high pressure mercury vapour lamp is made up of

In a diesel electric traction, if the current in the traction motor increases then the generator field

In diesel electric traction, the torque required from traction work must be

The practical luminous efficiency of the sodium vapour lamp is of the order of

The area under the speed - time curve represents the

A trolley bus runs on tyres driven by

In fluorescent lamp one capacitor is connected across the lamp circuit and another is connected across the starter. Then

During the train movement, the tractive effort produced at the pinion by the motor is transferred to the driving wheel

In percussion welding, the heat is produced by a rapid discharge of stored electrical energy from

The electrodes used for projection welding are

The voltage - current characteristics of the arc welding must be

For a good weld,

The advantage of rectifier type welding set is

Spot welding is used to weld metal pieces whose thickness