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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

Correct Answer :

A. Less than the smallest resistance in the connection


Related Questions

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At parallel resonancea the currents flowing through L and C are

A. Infinite

B. Zero

C. Unequal

D. Equal

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4

If two resistances of 9 and 6 are connected in parallela the total resistance is

A.

B.

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A gang capacitor is a variable capacitor in which capacitance is varied by changing the

A. Dielectric

B. Number of plates

C. Plate area

D. Distance between plates

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4

Electron flow assumes charges flow from

A. Negative to positive

B. Negative to negative

C. Positive to negative

D. Positive to positive

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4

What is the temperature coefficient of the resistance Eureka?

A. Infinity

B. Negative

C. Almost zero

D. Positive

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4

The reason why electrical appliances are connected in parallel.

A. It is a simple circuit

B. This makes the operation of appliances independent with each other

C. This results in reduced power consumption

D. All of the above

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4

The open-circuit voltage at the terminal of load RL is 60V. Under the condition of maximum power transfera the load voltage will be

A. 60 V

B. 15 V

C. 20 V

D. 30 V

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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

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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

A lead conductor has a resistance of 25 at 0 �C. Determine its resistance at -30 �C

A.

B.

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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

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4

What is the conductance of a circuit having three 10 resistors in parallel?

A. 0.3 S

B. 3.33 S

C. 0.33 S

D. 30 S

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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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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

With double the number of turns by the same length and areaa the inductance is

A. The same

B. Doubled

C. Quartered

D. Quadrupled

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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

Which component opposes voltage change?

A. Resistor

B. Inductor

C. Capacitor

D. Transistor

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4

The ohmic value of a resistor with negative temperature coefficient

A. Increases with increasing temperature

B. Increase with decreasing temperature

C. Stays unchanged with temperature change

D. Stays unaffected even with increasing temperature

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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

Delta to wye or wye to delta transformation technique is applied to a ___ network.

A. One-terminal

B. Two-terminal

C. Three-terminal

D. Complex

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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

In liquids and gasesa ionization current results from a flow of

A. Positive or negative ions

B. Free electrons

C. Ions that are lighter in weight than electrons

D. Protons

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4

Which of the following is the peakiest?

A. Square wave

B. Sinusoidal wave

C. Triangular wave

D. Rectangular wave

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4

Refers specifically to steady state values of quantities in ac circuits which are complex numbers.

A. Domain

B. Scalar quantity

C. Vector quantity

D. Phasor quantity

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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

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

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

The graph between an alternating quantity and time is called

A. Sine wave

B. Curve

C. Waveform

D. A plot

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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

In a circuita an active element is one which

A. Supplies energy

B. Receives energy

C. Both supplies and receives energy

D. Amplifies signal