Home
Current Affairs January 2024

What is the correct answer?

4

Voltage resonance means

A. Series resonance

B. Parallel resonance

C. Current magnification

D. Gain magnification

Correct Answer :

A. Series resonance


Related Questions

What is the correct answer?

4

Which one of the following elements serves as a protection against overload?

A. Fuse

B. Switch

C. Resistor

D. Relay

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

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

A. Paper

B. Mica

C. Air

D. Electrolyte

What is the correct answer?

4

What is the reciprocal of quality factor?

A. Power factor

B. Reactive factor

C. Dissipation factor

D. 1/Q factor

What is the correct answer?

4

When resistance are connected in parallela the total resistance is

A. Less than the smallest resistance in the connection

B. Greater than the smallest resistance in the connection

C. Between the smallest and greatest resistance in the connection

D. Increasing and decreasing depending upon the supply voltage

What is the correct answer?

4

An inductance of 1 mH is

A. 0.001 H

B. 0.01 H

C. 0.0001 H

D. 0.10 H

What is the correct answer?

4

The maximum power transfer theorem is used in

A. Power system

B. Electronic system

C. Refrigeration

D. Air conditioning

What is the correct answer?

4

An inductive circuit of resistance 16.5 and inductance of 0.14 H takes a current of 25 ?. if the frequency is 50 Hza find the supply voltage.

A. 1501 V

B. 1174V

C. 1877V

D. 991 V

What is the correct answer?

4

What is the most common non-sinusoidal waveform?

A. Square wave

B. Triangular wave

C. Trapezoidal wave

D. Sawtooth wave

What is the correct answer?

4

At what frequency will the current in a series RLCcircuit reach its maximum value for an applied voltage of 15 V with R = 500 a L = 100 H and C= 0.001 F?

A. 503 kHz

B. 403 kHz

C. 603 kHz

D. 303 kHz

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

What is a closed path made of several branches of the network called?

A. Junction

B. Node

C. Terminal

D. Loop

What is the correct answer?

4

Which component opposes voltage change?

A. Resistor

B. Inductor

C. Capacitor

D. Transistor

What is the correct answer?

4

What determines the magnitude of electric current?

A. The rate at which electrons are produced

B. The type of material used

C. The current carrying capacity of the circuit

D. The rate at which electrons pass a given point

What is the correct answer?

4

When two unequal values of resistors are connected in parallel across a dc sourcea greater current flows through the

A. Higher resistance

B. Lower resistance

C. Higher wattage resistance

D. Lower wattage resistance

What is the correct answer?

4

In a complex number 5 + j 10a 10 is called ___ part.

A. Imaginary

B. Real

C. Conjugate

D. Integer

What is the correct answer?

4

In calculating maximum instantaneous power ___ voltage or current is used.

A. Peak

B. Average

C. Rms

D. Instantaneous

What is the correct answer?

4

In a rectangular wavea the form factor is

A.

B.

What is the correct answer?

4

When current and voltage arte in phase in an ac circuita the ___ is equal to zero.

A. Resistance

B. Reactance

C. Inductance

D. Capacitance

What is the correct answer?

4

What is the resonant frequency of a circuit when L of 25 microhenrys and C of 10 picofarads are in parallel?

A. 10.1 kHz

B. 10.1 MHz

C. 101 MHz

D. 101 kHz

What is the correct answer?

4

What is the half-power bandwidth of a parallel resonant circuit which has a resonant frequency of 3.6 MHz and Q of 218?

A. 1.65 kHz

B. 16.5 MHz

C. 16.5 kHz

D. 165 kHz

What is the correct answer?

4

Which of the following combination of length and cross-sectional area will give a certain volume of copper the least resistance?

A. 2L and1/2 A

B. Does not matter because the volume of copper remains the same

C. L and A

D. ½ L and 2 A

What is the correct answer?

4

Which of the following elements is active?

A. Resistor

B. Inductor

C. Capacitor

D. Ideal voltage source

What is the correct answer?

4

A capacitor consists of two

A. Conductors only

B. Dielectric only

C. Conductors separated by a dielectric

D. Dielectric separated by a conductor

What is the correct answer?

4

When two coils of identical reactance are in parallel without mutual inductancea the reactance of the combination is ___ the reactance of each coil.

A. One half

B. Twice

C. Four times

D. One fourth

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

When voltage is applied across a ceramic dielectric the electrostatic field p roduced is 50 times greater than air dielectric. The dielectric constant of ceramic therefore is

A.

B.

What is the correct answer?

4

A trigger circuit consisting of a capacitor of 0.01 F is connected in series with a resistor. If the circuit requires 100 Vdcto operatea determine the value of the resistor when time constant is 0.009s.

A.

B. 900 k

C. 900 M

D. 900 G

What is the correct answer?

4

A capacitor is basically constructed of

A. Two conductors separated by a dielectric

B. Two dielectric separated by a conductor

C. Conductors and dielectric

D. Conductors and semiconductors

What is the correct answer?

4

The voltage lags the current by cycle in a

A. Purely resistive circuit

B. Purely inductive circuit

C. Purely capacitive circuit

D. Circuit containing resistancea capacitance and inductance