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30 Questions MCQ Test - Electrical Engineering - EE 2017 GATE Paper MCQ Quiz

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz for GATE 2024 is part of GATE preparation. The Electrical Engineering - EE 2017 GATE Paper MCQ Quiz questions and answers have been prepared according to the GATE exam syllabus.The Electrical Engineering - EE 2017 GATE Paper MCQ Quiz MCQs are made for GATE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz below.
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Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 1

Here,  represents the largest integer less than or equal to t and  denotes the smallest integer greater than or equal to t. The coefficient of the second harmonic component of the Fourier series representing g(t) is _________.

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 1

Since this wave form contain hidden half wave symmetry, even harmonics does not exist.
Thus coefficient of second harmonic component of Fourier series will be zero.

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 2

A source is supplying a load through a 2-phase, 3-wire transmission system as shown in figure below. The instantaneous voltage and current in phase-a are Van=220sin (100πt) V and i= 10 sin (100πt) A, respectively. Similarly for phase-b the instantaneous voltage and current are Vbn = 220 cos (100πt) V and ib = 10 cos (100πt) A, respectively.

The total instantaneous power flowing form the source to the load is 

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 2

 Pins tan eous = Van ia+ Vbn ib

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Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 3

 In Breakdown tests, the tests voltages required for these tests are usually of the order of

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 4

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 4

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 5

Consider an electron, a neutron and a proton initially at rest and placed along a straight line such that the neutron is exactly at the center of the line joining the electron and proton. At t=0, the particles are released but are constrained to move along the same straight line. Which of these will collide first?

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 5

The Gravitational force of alteration between any two particles shown above is made much negligible when compared to coloumbic force of alteration between electron and proton.
Force of alteration

Due to this force, the electron as well as the proton will move towards each other, since Mo << mp, he speed and acceleration of the electron will be much greater than that of proton. This causes electron to collide with the neutron faster when compared to proton.

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 6

Let z (t) = x (t)* y (t) , where ‘*’  denotes convolution. Let C be a positive real-valued constant. Choose the correct expression for z (ct).

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 6

z (t) = x(t) * y(t)
⇒ z(s) = (s).y(s)

Converting into Laplace transform and applying time sealing property.

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 7

A 3-bus power system is shown in the figure below, where the diagonal elements of Y-bus matrix are Y11 = - j12pu, Y22 = - j15pu and Y33 = - j7pu

The per unit values of the line reactances p, q and r shown in the figure are 

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 7

Y11 = y10 + y12 + y13 = - j12 = - (jq1 + jr1

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 8

Inelastic collisions are those in which internal changes in energy take place within an atom or a molecule at the expenses of total kinetic energy of the colliding particle. Suitable example for inelastic collisions is/are

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 9

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 9

*Answer can only contain numeric values
Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 10

The following measurements are obtained on a single phase load: V = 220V ±1%, I = 5.0A ±1% and W = 555W ± 2%. If the power factor is calculated using these measurements, the worst case error in the calculated power factor in percent is ________.


Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 10

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 11

The transfer function of a system is given by  Let the output of the system be  for the input  Then the minimum and maximum 
values of  (in radians) are respectively

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 11

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 12

The matrix  has three distinct eigenvalues and one of its eigenvectors is 

Q. Which one of the following can be another eigenvector of A?

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 12

By the properties of Eigen values and Eigen vectors, another eigen vector of A is 

The eigen vectors corresponding to distinct eigen values of a real symmetric matrix are orthogonal i.e., pair wise dot product is zero.

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 13

For the power semiconductor devices IGBT, MOSFET, Diode and Thyristor, which one of the following statements is TRUE?

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 13

MOSFET → Majority carrier device (NMOS, PMOS)
Diode → both majority & minority carrier device
Transister → Npn, pnp
IGBT → input is MOSFET, Output is BJT

*Answer can only contain numeric values
Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 14

Consider the unity feedback control system shown. The value of K that results in a phase margin of the system to be 30° is _______. 


Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 14

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 15

A solid iron cylinder is placed in a region containing a uniform magnetic field such that the cylinder axis is parallel to the magnetic field direction. The magnetic field lines inside the cylinder will

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 15

Flux always chooses less reluctance path. So flux tried to flow inside the conductor and closer to the axis of the cylinder.

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 16

 If the current changes from 5A to 3A in 2 seconds and the inductance is 10H, calculate the emf.

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 16

We know that:
emf=L(i2-i1)/t
Substituting the values from the question, we get emf=10V.

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 17

Consider the system with following input-output relation y [n] = (1 + (-1)n) x [n]

where, x[n] is the input and y[n] is the output. The system is 

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 17

For two different inputs we have same output. Thus one to one mapping is not possible. Hence the systems is non invertible

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 18

The slope and level detector circuit in a CRO has a delay of 100 ns. The start-stop sweep generator has a response time of 50 ns. In order to display correctly, a delay line of

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 18

The delay line should be inverted in VDP (Y-channel) only.

*Answer can only contain numeric values
Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 19

A 3-phase voltage source inverter is supplied from a 600V DC source as shown in the figure below. For a star connected resistive load of 20Ω per phase, the load power for 120° device conduction, in kW is __________.


Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 19

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 20

A closed loop system has the characteristic equation given by s3 + Ks2 + (K + ) s + 3 = 0. For this system to be stable, which one of the following conditions should be satisfied?

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 20

Given CE = s3 + ks2 + (k + 2) s + 3 = 0

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 21

A 4 pole induction machine is working as an induction generator. The generator supply frequency is 60 Hz. The rotor current frequency is 5 Hz. The mechanical speed of the rotor in RPM is

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 21

Rotor speed should be greater than syn.speeed, to ge inductance generator mode.

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 22

For the circuit shown in the figure below, assume that diodes D1, D2 and D3 are ideal.

The DC components of voltages v1 and v2, respectively are

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 22

*Answer can only contain numeric values
Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 23

A 10-bus power system consists of four generator buses indexed as G1, G2, G3, G4 and six load buses indexed as L1, L2, L3, L4, L5, L6. The generator bus G1 is considered as slack bus, and the load buses L3 and L4 are voltage controlled buses. The generator at bus G2 cannot supply the required reactive power demand, and hence it is operating at its maximum reactive power limit. The number of non-linear equations required for solving the load flow problem using Newton-Raphson method in polar form is _______.


Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 23

Total no of buses=10
Given G1=slack bus, G2=generator/PQ bus
G3 , G4 are PV buses
PQ buses→ L1 , L2 , L5 , L5 (4)
Voltage controlled PV buses → L3 , L4 (2)
Minimum no of nonlinear equations to be solved = 

*Answer can only contain numeric values
Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 24

The power supplied by the 25 V source in the figure shown below is ________W.


Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 24

KCL
I + 0.4I = 14
⇒1.4I = 14
⇒ I = 10A
The power supplied by 25 V = 

*Answer can only contain numeric values
Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 25

In the converter circuit shown below, the switches are controlled such that the load voltage vo(t) is a 400 Hz square wave.

The RMS value of the fundamental component of vo(t) in volts is _______.


Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 25

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 26

The output expression for the Karnaugh map shown below is 

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 26

*Answer can only contain numeric values
Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 27

A 220 V DC series motor runs drawing a current of 30 A from the supply. Armature and field circuit resistances are 0.4 Ω and 0.1 Ω respectively. The load torque varies as the square of the speed. The flux in the motor may be taken as being proportional to the armature current. To reduce the speed of the motor by 50% the resistance in ohms that should be added in series with the armature is _________. 


Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 27

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 28

The transfer function of the system Y(s)/U(s) whose state-space equations are given below is:

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 28

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 29

The load shown in the figure is supplied by a 400 V (line to line) 3-phase source (RYB sequence).  The load is balanced and inductive, drawing 3464 VA. When the switch S is in position N, the three watt-meters W1, W2 and W3 read 577.35 W each. If the switch is moved to position Y, the readings of the watt-meters in watts will be:

 

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 29

If the switch is connected to Neutral, then each wattmeter will read 

Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 30

Two passive two-port networks are connected in cascade as shown in figure. A voltage source is connected at port 1.

Given V1 = A1 V2 + BI1
I1 = C1 V2 + DI2
V2 = AV3 + B2 I3
I2 = CV+ DI3

A1, B1, C1, D1, A2, B2, C2 and D2 are the generalized circuit constants. If the Thevenin equivalent circuit at port 3 consists of a voltage source VT and impedance ZT connected in series, then

Detailed Solution for Electrical Engineering - EE 2017 GATE Paper MCQ Quiz - Question 30

We can write V1 , I1 in terms of V3 +I3

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