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What is the correct answer?

4

The symbol Q refers to

A. Resonance quotient

B. Quality factor

C. Power quotient

D. Qualification test

Correct Answer :

B. Quality factor


Related Questions

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4

In adding or subtracting phasor quantitiesa ___ form is the most convenient.

A. Polar

B. Rectangular

C. Trigonometric

D. Exponential

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4

An intermittent and non-symmetrical alternating current like that obtained from the secondary winding of an induction coil

A. Faradic current

B. Transient ac current

C. Inductive current

D. Capacitive current

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4

Kirchhoff�s laws (KCL and KVL) are applicable to

A. DCcircuits

B. ACcircuits

C. DC as well as AC circuits

D. Passive networks alone

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4

Which of the following is the most popular waveform?

A. Sinusoidal

B. Square wave

C. Triangular

D. Sawtooth

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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 %

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4

What rating of a resistor determines its ability to absorb heat?

A. Wattage

B. Ohmic

C. Current

D. Voltage

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4

Which of the following is a common material used in wire-wound resistors?

A. Manganin

B. Carbon

C. Bronze

D. German silver wire

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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

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4

For series capacitorsa total charge is

A. The sum of individual charges

B. Equal to the charge of either capacitors

C. Equal to the product of the charges

D. The quotient of the charges

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4

If an emf in circuit A produces a current in circuit Ba then the same emf in circuit Bproduces the same current in circuit ? this theorem is known as

A. Maximum power transfer theorem

B. Millman�s theorem

C. Reciprocity theorem

D. Norton�s theorem

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4

A tank circuit is a

A. Parallel LC circuit

B. Series LCcircuit

C. A resonant circuit

D. A non-resonant circuit

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4

What is the other name of relative permittivity?

A. Dielectric strength

B. Potential gradient

C. Breakdown voltage

D. Specific inductance capacity

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4

An inductance of 1 mH is

A. 0.001 H

B. 0.01 H

C. 0.0001 H

D. 0.10 H

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4

A resistor wound with a wire doubled back on itself to reduce the inductance.

A. Bifilar resistor

B. Wire-wound resistor

C. Anti-inductive resistor

D. Bleeder resistor

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4

In Norton�s theorema the short circuit current is obtained by

A. Opening the load terminals

B. Shorting the load terminals

C. Opening the voltage source

D. Shorting the voltage source

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4

According to Gauss theorema flux can be equated to

A. Charge

B. Field intensity

C. Current

D. Voltage

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4

What is the total effective capacitance of two 0.25 F capacitors connected in series?

A. 0.125 F

B. 1.25 F

C. 0.50 F

D. 2.5 if

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4

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

A. Paper

B. Mica

C. Air

D. Electrolyte

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4

If voltage across the plates of 2 F capacitor is increased by 4 Va then charge on the plates will

A. Decrease by 2 C

B. Increase by 2 C

C. Decrease by 4 C

D. Increase by 4C

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4

What capacitance exists not through design but simply because two conducting surfaces are relatively close to each other?

A. Surge

B. Stray

C. Natural

D. Normal

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4

When the movable plates of a gang capacitor completely overlap the fixed platesa the capacitance of the capacitor is

A. Halfway between maximum and minimum

B. Maximum

C. Minimum

D. Zero

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4

In an ac circuit with a resistive branch and an inductive branch in parallela the

A. Voltage across the inductance leads the voltage across the resistance by 90°

B. Resistive branch current is 90° out of phase with the inductive branch current

C. Resistive and inductive branch currents have the same phase

D. Resistive and inductive branch currents are 180° outof-phase

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4

The Q-factor of a series resonant circuit is also known as

A. Current magnification factor

B. Voltage magnification factor

C. Load factor

D. Leakage factor

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4

If a coil has a Q of 10a it means that

A. The energy stored in the magnetic field of the coil is 10 times the energy wasted in its resistance

B. The energy wasted in its resistance is 10 times the energy stored in the magnetic field of the coil

C. It is a low Q coil

D. It is a high Q coil

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4

Which of the following is not a factor affecting dielectric strength?

A. Mass

B. Moisture content

C. Temperature

D. Thickness

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4

Transient period is considered over after

A.

B.

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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

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4

The power factor of a circuit is equal to

A. RZ

B. XC/Z

C. XL/Z

D. R/Z

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4

What refers to the lowest voltage across any insulator that can cause current flow?

A. Conduction voltage

B. Critical voltage

C. Breakdown voltage

D. Voltage capacity

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4

If three 100-pF capacitors are connected in seriesa then the total capacitance is

A. 300 pF

B. 100 pF

C. 50 pF

D. 33.3 pF