A sine wave completes quarter cycle in ____ radians.
1.2Ï€
2.Ï€
3.Ï€/2
4.Ï€/4
Determine the current if a 20 coulomb charge passes a point in 0.25 seconds.
1.10 A
2.20 A
3.2 A
4.80 A
The total area under the complete curve divided by the distance of the curve is called?
1.peak to peak value
2.RMS value
3.average value
4.effective value
A conductor is said to have resistance of one ohm if a potential difference of one volt across its terminals causes a current of X ampere to flow through it. What will be the value of X?
1.4
2.2
3.3
4.1
A copper wire of length l and diameter d has potential difference V applied at its two ends. The drift velocity is V. If the diameter of wire is made d/4, then drift velocity becomes ___________
1.V/16
2.16V
3.V
4.V/4
A semiconductor diode is an ____________ element.
1.Bilateral
2.Unilateral
3.Active
4. Passive
A sine wave completes full cycle in ____ radians.
1.Ï€
2.2Ï€
3.Ï€/4
4.Ï€/2
A wire is carrying a direct current of 20A and a sinusoidal alternating current of peak value 20A. Find the rms value of the resultant current.
1.24
2.24.5
3.25
4.25.5
An electric current of 10 A is the same as ___________
1.10 J/C
2.10 V/C
3.10C/sec
4. 10 W/sec
Conductance is expressed in terms of ___________
1.mho
2.mho/m
3.ohm/m
4.m/ohm
Consider a circuit with two unequal resistances in parallel, then ___________
1.large current flows in large resistor
2.current is same in both
3.potential difference across each is same
4.smaller resistance has smaller conductance
Energy per unit charge is ____________
1.Power
2.Voltage
3.Current
4.Capacitance
Every circuit is a network, but all networks are not circuits.
1.True
2.False
Example of distributed element is ___________
1.Resistor
2.Thermistor
3.Semiconductor diode
4.Transmission lines
How many types of dependent or controlled sources are there?
1.1
2.2
3.3
4.4
If a function f(t) is periodic, then?
1.f(t) = f(t+T)
2.f(t) = f(t+T/2)
3.f(t) = f(t+T/4)
4.f(t) = f(t+T/8)
If the voltage-current characteristics is a straight line through the origin, then the element is said to be?
1.Linear element
2.Non-linear element
3.Unilateral element
4.Bilateral element
In a circuit with more number of loops, which law can be best suited for the analysis?
1.KCL
2.Ohm’s law
3.KVL
4.None of the mentioned
In CCVS, voltage depends on the control current and the constant called __________
1.Transconductance
2.Transresistance
3.Current Gain
4.Voltage Gain
In which of the following cases is Ohm’s law not applicable?
1.Electrolytes
2.Arc lamps
3.Insulators
4.Vacuum ratio values
Inductance of an inductor is inversely proportional to its ___________
1.Number of turns
2.Area of cross section
3.Absolute permeability
4.Length
Kirchhoff’s current law is applied at ___________
1.loops
2.nodes
3.both loop and node
4.none of the mentioned
Kirchhoff’s Current law is based on the law of conservation of ___________
1.energy
2.momentum
3.mass
4.charge
Kirchhoff’s voltage law is based on principle of conservation of ___________
1.energy
2.momentum
3. mass
4.charge
Ohm’s law is not applicable to ___________
1.dc circuits
2.high currents
3.small resistors
4.semi-conductors
Potential difference in electrical terminology is known as?
1.Voltage
2.Current
3.Resistance
4.Conductance
Resistance depends on the temperature of the conductor.
1.True
2. False
Resistance of a wire is yΩ. The wire is stretched to triple its length, then the resistance becomes ___________
1.y/3
2.3y
3.6y
4.y/6
Resistivity of a wire depends on ___________
1.length of wire
2.cross section area
3.material
4. all of the mentioned
Source is a basic network element which supplies power to the networks.
1.True
2.False
The capacitance of a capacitor does not depend on the absolute permittivity of the medium between the plates.
1.True
2.False
The circuit in which current has a complete path to flow is called ______ circuit.
1.short
2. open
3.closed
4.open loop
The current law represents a mathematical statement of fact that ___________
1.voltage cannot accumulate at node
2.charge cannot accumulate at node
3.charge at the node is infinite
4.none of the mentioned
The dependent sources are of _____________ kinds.
1.5
2.2
3.3
4.4
The form factor of the sinusoidal waveform is?
1.1.11
2.2.22
3.3.33
4.4.44
The frequency of a sine wave is 30Hz. What is its period?
1.3333ms
2.333.3ms
3. 33.33ms
4.3.333ms
The impedance value of a pure capacitor is?
1.ωC
2.1/ ωC
3.ωL
4.R
The maximum value of the wave during a positive half cycle or maximum value of the wave during negative cycle is called?
1.instantaneous value
2. peak value
3.peak to peak value
4.average value
The number of cycles a wave completes in one second is called?
1.time period
2.frequency
3.energy
4.wavelength
The peak factor of the sinusoidal waveform is?
1.4
2.2
3.1.414
4.8
The period of a function is measured as?
1.zero crossing of one cycle to zero crossing of next cycle
2.positive peak of one cycle to positive peak of next cycle
3.negative peak of one cycle to negative peak of next cycle
4.all of the mentioned
The period of a sine wave is 40ms. What is the frequency?
1.25
2.50
3.75
4. 100
The response of a second order system is?
1.pulse
2.saw tooth
3.square
4.sinusoid
The value from positive to negative peak of the sine wave is called?
1.effective value
2.average value
3.peak value
4.peak to peak value
The value of inductance reactance is?
1.R
2.ωL
3.1/ωL
4. ωC
The value of the sine wave at some particular instant is called?
1.peak value
2.peak to peak value
3.instantaneous value
4.average value
Unit of inductance is ________
1.Weber
2. Henry
3.Farad
4. Tesla
Which of the following bulbs will have high resistance?
1.220V, 60W
2.220V,100W
3.115V,60W
4. 115V,100 W
Which of the following is an Active element?
1.Resistor
2.Inductor
3.Capacitor
4.OP-AMP
Which of the following is not an example of a linear element?
1.Resistor
2.Thermistor
3.Inductor
4.Capacitor