Related Questions
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4
What is the other name of relative permittivity?
D. Specific inductance capacity
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4
What is the specific resistance of a pure silicon?
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4
The current is ____ times the maximum current at half-power points of a resonance curve.
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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
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4
The ratio of the flux density to the electric field intensity in the dielectric is called
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4
What is the most common non-sinusoidal waveform?
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What is the resonant frequency of a circuit when L of 25 microhenrys and C of 10 picofarads are in parallel?
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4
A term used to express the amount of electrical energy stored in electrostatic field.
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A capacitor opposes change in
D. Neither voltage nor current
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An alloy composed of 84 % coppera 12 % manganese and 4 % nickel.
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Which of the following dielectric materials makes the highest-capacitance capacitor?
B. Barium-strontium titanite
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What is the specific resistance of a pure germanium?
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4
In a circuita an active element is one which
C. Both supplies and receives energy
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4
Which of the following is a way of decreasing mutual inductance?
A. Moving the coils closer
B. Moving the coils apart
C. Decreasing the number of turns of either coil
D. Increasing the number of turns of either coil
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4
A capacitor consists of two
C. Conductors separated by a dielectric
D. Dielectric separated by a conductor
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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.
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4
Which of the following is a common material used in wire-wound resistors?
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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
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4
If a capacitor is rated for 200V dca what is its effective ac working voltage?
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4
The farad is not equivalent to which of the following combination of units
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4
A coil of inductance L has an inductive reactance of XLin an ac circuit in which the effective current is I. The coil is made from a superconducting material. The rate at which power is dissipated in the coil is
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4
The reason why electrical appliances are not connected in series.
A. Greater electrical power saving
C. Appliances have different current ratings
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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
³Any resistance R in a branch of a network in which a current I is flowing can be replaced by a voltage equal to IR�. This states
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4
How many degrees of phase represents one full cycle?
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In a circuita a passive element is one which
C. Both supplies and receives energy
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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 total capacitance of 10 capacitorsa each of 20 F in series?
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4
Which is considered as the effect of a dielectric material?
A. Increasing capacitance
B. Decreasing capacitance
C. Reducing the working voltage
D. Increasing the distance between the plates
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What refers to the lowest voltage across any insulator that can cause current flow?