2 NOVEMBER 2021 CURRENT AFFAIRS QUIZ

Identify the machine shown in the circuit

DC short shunt compound motor

DC long shunt compound generator

DC short shunt compound generator

DC shunt motor

TRUE ANSWER : ?
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In a single-phase capacitor start-and-run motor, the minimum number of capacitors to be used in it is:

3

1

4

2

TRUE ANSWER : ?
YOUR ANSWER : ?

Reflected Light/Incident Light =

Waste light factor

Maintenance factor

Absorption factor

Reflection factor

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Which of the following lamps employs a bimetallic strip?

Sodium vapor lamp

Mercury vapor lamp

Fluorescent lamp

Incandescent lamp

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______starting method CANNOT be used for starting a 3-phase squirrel cage induction motor

Rotor-resistance

Star-delta

Direct-on-line

Auto-transformer

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An electric motor in which both the rotor and stator fields rotate with the same speed is called

DC motor

Synchronous motor

Universal motor

Induction motor

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Let T be the net torque developed by the rotor runs at ω rad/s. What is the mechanical power developed?

Pmech = (ωT)/60

Pmech = (2πωT)

Pmech = (2πωT)/60

Pmech = ωT

TRUE ANSWER : ?
YOUR ANSWER : ?

Hunting occurs in a/an motor

Induction

DC series

DC shunt

Synchronous

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_____ is NOT a component in a thermal power plant

Reactor

Boiler

Economizer

Chimney

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An electric heater is connected across 230V and it draws a current of 2A. Then the resistance offered by the heater is?

11.5 ohm

115 ohm

290 ohm

29 ohm

TRUE ANSWER : ?
YOUR ANSWER : ?

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