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4

Which of the following is not a factor affecting capacitance oor?

A. Area of plates

B. Number of plates

C. Distance between plates

D. Dielectric material used

Correct Answer :

B. Number of plates


Related Questions

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4

A circuit whose parameters change with voltage or current.

A. Non-linear circuit

B. Linear circuit

C. Complex circuit

D. Passive circuit

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4

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

A. Peak

B. Average

C. Rms

D. Instantaneous

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4

The capacitor opposes any change in voltage across it by

A. Passing a voltage proportional to the rate of change of current

B. Acting as a short circuit at time equal to zero

C. Passing a current proportional to the rate of change of voltage

D. Acting as a short circuit at time equal to infinity

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4

Resistor with colored bands in the body

A. Wire-wound resistor

B. Carbon-composition resistor

C. Potentiometer

D. Rheostat

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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

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

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

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4

The presence of an electric current is made known by

A. Electric shock

B. Effects produced

C. Magnetic shock

D. Flashing

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4

Tungsten filament of bulbs has a hot resistance higher than its cold resistance due to its temperature coefficient which is

A. Positive

B. Negative

C. Zero

D. Infinite

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4

Which of the following has negative temperature coefficient?

A. Carbon

B. Nickel

C. Brass

D. Constantan

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4

The charging of a capacitor through a resistance follows what law?

A. Linear law

B. Hyperbolic law

C. Inverse-square law

D. Exponential law

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4

Which of the statements below is not true?

A. Current source is an active element

B. Resistor is a linear element

C. Voltage source is a passive element

D. Diode is a non-linear element

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4

The hot resistance of an incandescent lamp is about ___ times its cold resistance.

A.

B.

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4

When capacitors are connected in parallela the total capacitance is

A. Greater than the largest capacitor

B. Smaller than the largest capacitor

C. Smaller than the smallest capacitor

D. Greater than the smallest capacitor

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4

VL= VCin a series RLCcircuit when

A. The value of the impedance is minimum

B. The power factor is zero

C. The current leads the total voltage by 90�

D. The total voltage is zero

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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

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4

The charge in the capacitor is stored at the

A. Terminals

B. Plates

C. Dielectric

D. Air

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4

Norton�s theorem is ____ Thevenin�s theorem.

A. The same as

B. The converse of

C. Older that

D. More accurate than

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4

Two complex numbers or phasors are said to be conjugate if they

A. Differ only in the algebraic sign of their quadratic components

B. Differ only in the algebraic sign of their real components

C. Are equal in their real and quadrature components including alge

D. Are equal in their real components but differ in their quadrature components i ncluding algebraic signs.

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4

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

A. Zero

B. Infinity

C. k

D. M

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4

When frequency of an ac wave decreasesa the value of XLin a coil

A. Approaches zero

B. Gets larger positively

C. Gets larger negatively

D. Stays constant

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4

For parallel 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

Of the equivalent combination of unitsa which one is not equal to watt?

A. 2/V

B. AV

C. A2

D. J/s

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4

A capacitor opposes change in

A. Voltage

B. Current

C. Voltage and current

D. Neither voltage nor current

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4

The potential gradient in a cable is maximum in

A. Conductor

B. Outer sheath

C. Insulation

D. Uniformly all over

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4

Transient period is considered over after

A.

B.

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4

The voltage cannot be exactly in phase with the current in a circuit that contains

A. Only capacitance

B. Only resistance

C. Inductance and capacitance

D. Inductancea capacitance and resistance

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4

What theorem is usually used in the analysis of transistor circuit?

A. Superposition theorem

B. Millman�s theorem

C. Thevenin�s theorem

D. Norton�s theorem

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4

A capacitor of 0.5 F charged to 220 V is connected across an uncharged 0.5 F capacitor. What is the voltage across each capacitor?

A. 220 V

B. 150 V

C. 110 V

D. 22 V

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4

For a series ACcircuita ___ is not used as a reference phasor.

A. Voltage

B. Impedance

C. Current

D. Conductance