Home
Current Affairs January 2024

What is the correct answer?

4

In a series RLCcircuit

A. The current lags VLby 90�

B. The current leads VLby 90�

C. XL leads Xcby 90�

D. Z = jXL at resonance

Correct Answer :

A. The current lags VLby 90�


Related Questions

What is the correct answer?

4

Inductive reactance applies only to sine waves because it

A. Increases with lower frequencies

B. Increases with lower inductance

C. Depends on the factor 2

D. Decreases with higher frequencies

What is the correct answer?

4

Which of the following conditions is not true for a series RLCcircuit at resonance?

A. Z = jXL

B. XL= XC

C. The power factor is one

D. The magnitude of Z is

What is the correct answer?

4

The farad is not equivalent to which of the following combination of units

A. CV2

B. C2/J

C. C/V

D. J/V2

What is the correct answer?

4

An alloy composed of 84 % coppera 12 % manganese and 4 % nickel.

A. Manganin

B. Constantan

C. Nichrome

D. German silver wire

What is the correct answer?

4

The internal resistance of an ideal current source is

A. Infinite

B. Zero

C. Equal to the load resistance

D. To be determined

What is the correct answer?

4

The electric field strength between capacitor plates has a unit

A. Volts per meter

B. Volts per mil

C. Amperes per meter

D. Amperes per mil

What is the correct answer?

4

What is the value of a carbon composition resistor with the following color code: Browna whitea orangea red

A. 190 ; 10 %

B. 19 k ; 2 %

C. 19 k ; 20 %

D. 1.9 k ; 2 %

What is the correct answer?

4

In a parallel bank with unequal branch resistances

A. The highest R has the highest I

B. The lowest R has the highest V

C. The lowest R has the highest V

D. The highest R has the highest V

What is the correct answer?

4

The factor 0.707for converting peak to rms applies only to

A. Square waves

B. Triangle waves

C. Sawtooth waves

D. Sine waves

What is the correct answer?

4

Under the conditions of maximum power transfera a voltage source is delivering a power of 15 W to the load. What is the power generated by the source?

A. 60 W

B. 30 W

C. 15 W

D. 4 W

What is the correct answer?

4

Which of the following does not affect resistance?

A. Resistivity

B. Cross-sectional area

C. Mass

D. Length

What is the correct answer?

4

A factor that states how much the resistance changes for a change in temperature?

A. Resistivity

B. Specific resistance

C. Coefficient of temperature change

D. Temperature coefficient of resistance

What is the correct answer?

4

For multi-plate capacitora capacitance is proportional to

A. Number of plates less one(n ± 1)

B. Number of plates plus one(n + 1)

C. Number of plates less two(n - 2)

D. Number of plates (n)

What is the correct answer?

4

A capacitor opposes change in

A. Voltage

B. Current

C. Voltage and current

D. Neither voltage nor current

What is the correct answer?

4

The charge in the capacitor is stored at the

A. Terminals

B. Plates

C. Dielectric

D. Air

What is the correct answer?

4

Which of the following has negative temperature coefficient?

A. Carbon

B. Nickel

C. Brass

D. Constantan

What is the correct answer?

4

Electric energy refers to

A. Volt divided by coulomb

B. Voltampere

C. Volt-coulomb

D. Watt divided by time

What is the correct answer?

4

And ideal current source has an internal conductance of _____ siem

A. Infinite

B. One

C. Zero

D. One million

What is the correct answer?

4

Which of the following materials has the lowest dielectric strength?

A. Glass

B. Paper

C. Mica

D. Teflon

What is the correct answer?

4

The ratio between the reactive power and the apparent power of an ac load is called

A. Quality factor

B. Power factor

C. Power ratio

D. Reactive power

What is the correct answer?

4

The unit of elastance is

A. Farad

B. Daraf

C. Siemen

D. Henry

What is the correct answer?

4

What is the reading of an ohmmeter for a shorted capacitor?

A. Zero

B. Infinity

C. k

D. M

What is the correct answer?

4

What is expected when two 20 k a 1 watt resistor in parallel are use instead of one 10 k a 1 watt?

A. Provides higher current

B. Provides less power

C. Provides more power

D. Provides wider tolerance

What is the correct answer?

4

The second strip of an electronic resistor color-code represents

A. The multiplier

B. The second digit of the value

C. The temperature

D. The tolerance

What is the correct answer?

4

Which of the following dielectric materials makes the highest-capacitance capacitor?

A. Air

B. Barium-strontium titanite

C. Mica

D. Electrolyte

What is the correct answer?

4

The area of capacitor plates increases two timesa then its capacitance

A. Increases two times

B. Increases four times

C. Decreases two times

D. Decreases four times

What is the correct answer?

4

In a resonant circuita if Q ? 10 resonant frequency _______ bandwidth.

A. Bisects

B. Exceeds

C. Is less than

D. Is equal to

What is the correct answer?

4

Which factor does not affect resistance?

A. Length

B. Resistivity

C. Cross-sectional area

D. Mass

What is the correct answer?

4

What fusion of elements is without chemical action between them?

A. Mixture

B. Compound

C. Alloy

D. Ionization

What is the correct answer?

4

When two in-phase sine waves that have identical frequency and amplitude are added togethera then the result is a sine wave with ___ the amplitude of either.

A. Half

B. Twice

C. Four times

D. One-fourth