Electrical Engineering (EE)

Zero sequence current can flow from a line into a transformer bank if the windings are in

In a two value capacitor motor, the capacitor used for running purposes is

A pure capacitance connected across 50Hz, 230V supply consumes 0.04W. This consumption is attributed to

SF6 gas is transported in

In the below figure, the load is highly inductive. The firing angle is for each of the thyristors. The periods of conduction of Th₁ and Th₂ respectively are

One of the advantages of base modulation over collector modulation of a transistor class C amplifier is

At 0 deg K the percentage of quantum state occupied upto Fermi level is

Assertion (A): The realization of one port LC networks can be done in two. configurations (commonly known as Cauer-I and Cauer-II forms) using the continued fraction expansion of the driving point impedance.
Reason (R): The basic form of the Cauer realization being a ladder type network.

When a particular mode is excited in a waveguide, there appears an extra electric component, in the direction of propagation. The resulting mode is

 Ib = ?

The given characteristic polynomial s⁴ + s³ + 2s² + 2s + 3 =0 has

As compared to full wave rectifier using two diodes, the four diode bridge rectifier has the dominant advantage of

A series R-L-C circuit will have unity power factor if operated at a frequency of

The armature resistance of a 6-pole lap wound d.c. machine is . If the armature is
rewound as a wave-winding, what is the armature resistance

For the same voltage boost, the reactive power capacity is

The first and the last critical frequency of an RC driving point impedance function must respectively by

The power factor of an open ended cable can be improved by

Power factor of an alternator driven by constant prime mover input can be changed by changing its

The working of a synchronous motor is similar to

 Speed power product is measured as the product of

Which of the following device can be used as a phase advancer ?

Assuming accumulator contain A 64 and the carry is set (1).What will register A and (CY) contain after RAR?

The small value to drain to source voltage, JFET behaves like a

The dependent current source shown in figure

If the number of conductors and speed of a lap wound generator is doubled then the generated emf will be

Two -insulator discs of identical capacitance value C makes up a string for a 22 kV, 50 Hz,single-phase overhead line insulation system. If the pin to earth capacitance is also C, then the string efficiency is

Which of the following bus is used to transfer data from main memory to peripheral device?

A rigid body is rotating with an angular velocity of ω where, and v is the line velocity. If is the position vector given by  then the value of curl will be equal to 

Find out resistance between X and Y in following:

Which of the following statements is not true of a phasor?

Which property of delta function indicates the equality between the area under the product of function with shifted impulse and the value of function located at unit impulse instant ?

In a negative edge triggered J-K flip-flop, in order to have the output Q state 0, 0 and1 in the next three successive clock pulses, the J-K input states required would be respectively

The use of electronic instruments is becoming more extensive because they have

A 50 Hz, 11 kV, 3 phase alternator with earthed neutral having a reactance of 3 ohms per phase and is connected to a bus bar through a circuit breaker, if the distributed capacitance upto CB between the phase and neutral is 0.01 μ F.

What is the peak re striking voltage?

The z-transform of F(z) of the function f(nT) = a^nT is

A d.c. to d.c. chopper operates from a 48 V battery source into a resistive load
of 24 f~. The frequency of the chopper is set to 250Hz. What is the average
and rms load current and load power values when (a) chopper on-time is 1 ms,
(b) chopper on-time is 3 ms.

Consider the following statements:

In 8085 microprocessor, data - bus and addressbus are multiplexed in order to

1. Increase the speed of microprocessor

2. Reduce the number of pins.

3. Connect more peripheral chips.

Which of the above statement is/are correct?

What is the types of insulators used at dead ends and on straight lines as suspension type for voltage 3.3 kV and above ?

Identify the instruction that affects only Carry Flag.

A directional coupler with three or more holes is sometimes used in preference to the two-hole coupler

Arcing voltage will be the least in case of

In the buck-boost converter, what is the maximum value of the switch utilization - factor?

Error due to hysteresis is predominant in

Galloping in transmission line conductors arises generally due to

Match List - I (Types of friction) with List - II (Corresponding frictional force vs Velocity curve) and select the correct answer using the codes given below the lists:

The unit of magnetic flux is given by

Cauer and Foster forms of realizations are used only for

Which one of the following is not a property of root loci ?

For a pure capacitor, the voltage current relationship is

The number of discs in a string of insulators for 400 kV ac overhead transmission line lies in the range of

In the circuit shown below, Q₁ has negligible collector-to-emitter saturation voltage and the diode drops negligible voltage across it under forward bias. If V_cc is +5V, X and Y are digital signals with 0V as logic 0 and V_oc as logic 1, then the Boolean expression for Z is

In order to couple two generator to a waveguide system without coupling them to each other, one could not use a

 The energy required to charge a 10 µF capacitor to 100 V is

The size of a transformer core will depend on

The minimum number of NAND gate required to implement the logic function given by   is

The transistor is usually encapsuled in –

Consider the following statements:
1. The effect of feedback is to reduce the system error.
2. Feedback increases the gain of the system in one frequency range but decreases in another.
3. Feedback can cause a system that is originally stable to become unstable.
Which of these statements are correct ?

The number of LED display indicators in logic probe are

Consider the following systems
System I,
System II,
where C(s) is the output and R(s) is the input of these systems

The circuit shown in the figure is a

The number of parallel paths in a 4 layer, 8 pole wave winding d.c. machine is

The power supplied to the circuit in figure, by the voltage and current sources respectively are

The input to a coherent detector is DSB-SC signal plus noise. The noise at the detector output is

When a line-to-ground fault occurs, the current in the faulted phase is 100 A. The zero-sequence current in this case will be :

Compared to Gauss-seidel method, Newton- Raphson method takes

Galvanised steel wire is usually used as

In the circuit of figure β = 50 and V_BE = 0.5 V. The quiescent value of base current I_B is

In a nuclear power station using boiling water reactor, water is used as

The gauge factor is defined as

In a photodiode the current is due to

A microprocessor with a 16-bit address bus is used in a linear memory selection configuration (i.e., Address bus lines are directly used as chip selects of memory chips) with 4 memory chips. The maximum addressable memory space is