A lead conductor has a resistance of 25 at 0 �C. Determine its resistance at -30 �C
Correct Answer :
A.
Related Questions
The impedance in the study of electronics is represented by resistan
Inductance
Capacitance
Inductance and capacitance
Reactance
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0.125 F
1.25 F
0.50 F
2.5 if
The ratio between the reactive power and the apparent power of an ac load is called
Quality factor
Power factor
Power ratio
Reactive power
Loop currents should be assumed to flow in which direction
Straight
Clockwise
Counter-clockwise
Either B or C arbitrarily selected
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Current
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5 c
25 C
200 c
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Polar diagram
Scalar quantity
Velocity
Phasor
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Increases two times
Increases four times
Decreases two times
Decreases four times
The farad is not equivalent to which of the following combination of units
CV2
C2/J
C/V
J/V2
Which of the following is neither a basic physical law nor deliverable from one?
Ohm�s law
Coulomb�s law
Kirchhoff�s first law
Kirchhoff�s second law
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Linear law
Hyperbolic law
Inverse-square law
Exponential law
As applied to a series RLCcircuita bandwidth means
The frequency range for maximum power transfer
The difference between the highest and lowest frequencies of the oscillator
The separation of the half-power points
The frequency at which XL= XC
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Square wave
Sinusoidal wave
Triangular wave
Rectangular wave
In a circuita a passive element is one which
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Receives energy
Both supplies and receives energy
Attenuates signal
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Because it is a simple circuit
Because dc circuits require only resistance as load
Because they do not exist in a dc circuit
Because frequency of dc is zero
The reciprocal of a complex number is
A complex number
A real number
An imaginary number
A whole number
What is the hot resistance of a 100 Wa 220 V incandescent lamp?
The area of capacitor plates increases two timesa then its capacitance
Increases two times
Increases four times
Decreases two times
Decreases four times
What is the most common non-sinusoidal waveform?
Square wave
Triangular wave
Trapezoidal wave
Sawtooth wave
The temperature coefficient of resistance of electrolytes is
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Positive
Zero
Infinite
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503 kHz
403 kHz
603 kHz
303 kHz
What is the purpose of a load in an electric circuit?
To increase the circuit current
To decrease the circuit current
To utilize electrical energy
To make the circuit complete
Form its definitiona the unit of electric fielda is the N/C and equivalent unit of is the
V(m)2
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Capacitive
Resistive
Infinite
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Gain curve
Power curve
Resonance curve
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Reluctance
Susceptance
Elastance
Conductance
What is the specific resistance of a pure silicon?
55 -mm
55 -m
55 -cm
55 k -m
What does a capacitor store?
Voltage
Charge
Current
Power
An intermittent and non-symmetrical alternating current like that obtained from the secondary winding of an induction coil
Faradic current
Transient ac current
Inductive current
Capacitive current