Quiz - EEE Tradesman

#1. Motor used in the household refrigerator is…..?

DC series motor

DC shunt motor

Single phase induction motor

Universal motor

#2. Which motor would you select for vaccum cleaner?

Universal motor

Repulsion motor

Hysterisis motor

Induction motor

#3. The damper winding in a synchronous motor is generally used…..?

To provide starting torque only

To reduce noise level

To reduce eddy current

To prevent hunting & provide starting torque

#4. An auto transformer which has only one winding may be used as…?

step up transformer

step down transformer

step up transformer & step down transformer

none of these

#5. The unit of solid angle is….?

lumen

radian

steradian

candela

#6. Full form of MCCB is…?

Moulded case circuit breaker

Moulded case currentbreaker

Miniature case circuit breaker

Minimum current circuit breaker

#7. The star delta starter used in ….?

Flour mills

Pumps

Machine tools

All of these

#8. Motor used in the ceiling Fan is….?

Split phase motor

AC series motor

Capacitor start motor

Replusion motor

#9. Rotor resistance starter used to which of the following motors?

slip ring motor

heavy duty squirrel cage motor

medium duty squirrel cage motor

double cage motor

#10. The thickness of the insulation provided in the conductor in a cable depends upon the factor…?

resistivity of conductor

current to be carried

operating voltage

power factor

#11. The structure of pin type insulator is wavy, It is done to increase…?

mechanical strength

puncture strength

flash over voltage

thermal strength

#12. Carbon arc lamp are commonly used in ….?

street lighting

domestic lighting

cinema projectors

photography

#13. Which of the following is one not a part of circuit breaker?

explosion plot

conservator

operating mechanism

fixed & moving contacts

#14. The handle of iron box is made up of…?

Bakelite

Ebonite

Chromium

Bakelite & Ebonite

#15. Lumen / Watt is the unit of….?

Light flux

Luminous efficiency

Luminous intensity

Brightness

#16. In running condition voltage across the tube starter is…?

110 V

0 V

220 V

180 V

#17. Capacitor is used in tube circuit is….?

to improve the voltage

to give the full light

to improve the power factor

to safe guard the tube

#18. The synchronous speed of an induction motor refers to the speed of….?

Rotor

Armature

Speed marked on the name plate

Rotating magnetic field

#19. Three phase induction motor by DOL starter, the short circuit current is protected by….?

No volt coil

Over load relay

Back off fuse

Protective earth connection

#20. As compared to rewirable fuses HRC fuse have….?

high speed of operation

high rupturing capacity

no ageing effect

low rupturing capacity

#21. The following application DC is essential….?

Electric traction motor

electric home appliances

Machine shop motor

Illumination

#22. Which of the following, does not change in a transformer?

current

voltage

freaquency

all the above

#23. Which winding in a transformer has more number of turns?

low voltage winding

high voltage winding

winding does not depend upon the number of turns

none of these

#24. Red colour wire is generally known for…?

insulated wire

earth wire

neutral wire

phase wire

#25. In a DC machine the number of brushes in lap winding is….?

same number of poles

double number of poles

half the number of poles

two number

Quiz – EEE Tradesman

#1. Motor used in the household refrigerator is…..?

#2. Which motor would you select for vaccum cleaner?

#3. The damper winding in a synchronous motor is generally used…..?