Basic electrical engineering quiz

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Electrical Circuit Theory and Machines Important Quiz.

one coulomb of charge?

1 point

Option 1

select active network

1 point

inductance

voltage source

resistance

diode

if a circuit don't have any source then its called?

1 point

Active network

passive network

linear network

bilateral network

which theorem is based on linearity?

1 point

Thevenin's Theorem

Norton's Theorem

super position Theorem

reciprocity Thorem

supply frequency in India ?

1 point

50Hz

60Hz

70Hz

80hz

which is correct Resonance condition?

1 point

XL+XC

XL=XC

XL-XC

XC x XL

Current Through All resistors is same in which Connection?

1 point

series Connection

Parallel Connection

Series & Parallel connection

Dynamic induced Emf can be found in

1 point

Motor

transformer

Generator

impedance at series resonance will be ?

1 point

maximum

minimum

equal

Not equal

impedance at parallel resonance will be ?

1 point

maximum

minimum

equal

not equal

if the impedance and currents in 3 phase are not equal then its called?

1 point

Load

balanced Load

unbalanced Load

which form Energy stored in Capacitance?

1 point

Electromagnetic field

Magnetic Field

Electrostatic Filed

Electro Energy

which form Energy stored in inductance?

1 point

Electromagnetic field

Magnetic Filed

Electrostatic Filed

Electro energy

in which Connection Voltage is same?

1 point

Series connection

parallel connection

parallel & series Connection

all

Scott Connection is used to convert from?

1 point

1 phase to 3 phase

3phase to 1phase

3phase to 2phase

All

Megger is used to measure?

1 point

High voltage

High Resistance

High Current

High power

In which Transformer Common winding is used?

1 point

Ideal transformer

Transformer

Auto Transformer

All Above

Dummy coils are used for ?

1 point

To Start Motor

To start Generator

Above two

Mechanical Balancing

Lap winding is preferred for?

1 point

Low current & Low voltage

Low current & High Voltage

High current & High Voltage

High Current & Low voltage

Current I=150mA, Voltage V=120v Find R?

1 point

600 ohm

900 ohm

1000 ohm

800 ohm

A 4 pole Dc generator has wave wound armature with 792 conductors.the flux per pole is 0.012 wb Determine the speed at which it should be run to generate 240V on no load

1 point

700rpm

758rpm

1000rpm

1200rpm

Find the equivalent Resistance of the circuit shown in Fig.

1 point

1.55

1.054

Application of DC Shunt Motor

1 point

Blowers & fans

Elevator

Rolling Mills

Crane

Damper Winding Is used to?

1 point

start DC Machine

Start synchronous Machine

Start Induction Machine

All Above

Characteristics of DC Series Motor

1 point

No Load Condition is Dangerous

Medium starting Torque

Constant Speed

All

Electrons in the last orbit of an Atom are called

1 point

Free Electrons

Thermionic Electrons

Bound Electrons

Valence Electrons

In dynamometer Wattmeter the moving Coil is

1 point

current coil

potential coil

Current or Potential Coil

none of the above

The Armature Copper Loss in DC Generator is a

1 point

variable loss

Stray loss

Constant loss

None of the Above

The Transformer Doesn't Change posses ______Changing property

1 point

Current

Voltage

Power

Impedance

Approximate Efficiency of Large Transformers

1 point

80%

95%

60%

50%

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