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Gate Mock Test: Electrical Engineering(EE)- 7

65 Questions MCQ Test GATE Electrical Engineering (EE) 2023 Mock Test Series | Gate Mock Test: Electrical Engineering(EE)- 7

Description

Attempt Gate Mock Test: Electrical Engineering(EE)- 7 | 65 questions in 180 minutes | Mock test for GATE preparation | Free important questions MCQ to study GATE Electrical Engineering (EE) 2023 Mock Test Series for GATE Exam | Download free PDF with solutions

QUESTION: 1

Question 1 to 5 carry One Mark each

Q.

According to the weather______it is going to be cloudly today

A.
announcement
B.
indication
C.
predication
D.
forecast

Solution:

QUESTION: 2

What is the unit digit in

A.
3
B.
0
C.
4
D.
None of these

Solution:

QUESTION: 3

In the following questions, a sent ence has been given in direct/indirect speech.
She said, “Let them play”.

A.
She advised that we should be allowed to play
B.
She advised that you should be allowed to play
C.
She advised that they would be allowed to play
D.
She advised that they should be allowed to play

Solution:

QUESTION: 4

Select the pair that best express relationship similar to that expressed in the pair.
Light : Glint

A.
T ide : Wave
B.
Scent : Whiff
C.
Colour : Shade
D.
Sound : Blare

Solution:

QUESTION: 5

A and B together can do a piece of work in 12 days, which B and C together can do in 16 days. Aft er A has
been working it for 5 days and B for 7 days, C finishes it in 13 days. In how many days C alone will do the
work?

A.
16
B.
24
C.
36
D.
48

Solution:

QUESTION: 6

Question 6 to 10 carry Two Marks each

The sufficient condition for matrix ‘A’ to be diagonalizable is

A.
LI eigen vector < R (A)
B.
LI eigen vector = R (A)
C.
LI eigen vector > R (A)
D.
None of these

Solution:

QUESTION: 7

If x = y^a , y = z^b and z = x^c then abc = ?

A.
1
B.
2
C.
3
D.
4

Solution:

QUESTION: 8

Out of the four alternatives suggested select the one which is correct

A.
Very seldom a movie can hold my attention like this one
B.
Very seldom can a movie hold my attention like this one
C.
Very seldom a movie has held my at tention like t his one
D.
Very seldom a movie has hold my attention like this one

Solution:

QUESTION: 9

The value of X in the following figure is

A.
3
B.
4
C.
8
D.
12

Solution:

QUESTION: 10

The piechart shows the distribution of New York market share by value of different computer companies in 2005.

T he piechart shows the distribution of New York market share by volume of different computer companies
in 2005.

Number of units sold in 2005 in New York = 1,500
Value of units sold in 2005 in New York = US$ 16,50,000

A.
Commodore
B.
IBM
C.
Tandy
D.
Cannot be determined

Solution:

*Answer can only contain numeric values

QUESTION: 11

Question 11 to 35 carry One Mark each

Value of a is ____________

Solution:

QUESTION: 12

iⁱis of the form, where (i= sqrt {-1})

A.
Purely real
B.
Purely imaginary
C.
Imaginary with non-zero real part
D.
Can not be determined

Solution:

*Answer can only contain numeric values

QUESTION: 13

6 boys and 6 girls sit in a row randomly. The probability that all the six girls sit together is in the form 1/a. Value of a is ______________.

Solution:

QUESTION: 14

The C/R of system shown in figure below is

Solution:

*Answer can only contain numeric values

QUESTION: 15

For a unit y feedback system whose open - loop transfer function is

the velocity error is ______________

Solution:

*Answer can only contain numeric values

QUESTION: 16

If for a 2 × 2 matrix a₁₁ = a₁₂ = a₂₁ = 1 and a₂₂ = –1. If the eigen values of A¹⁹ can be writ ten in
the form , then value of a × b is __________________

Solution:

QUESTION: 17

T he solution of the differential equation is

Solution:

QUESTION: 18

T he addresssing mode, as shown in figure, is

A.
direct
B.
register
C.
register indirect
D.
immediate

Solution:

QUESTION: 19

Laplace transform analysis helps in

A.
Solving integral different ial equations
B.
Convert s different ial equation in to algebraic equation
C.
Convert int egral equation in the algebraic equation
D.
All of above

Solution:

QUESTION: 20

PMMC instrument produces a deflection of 90° when a current of 2 mA passes through the moving coil.
T he instrument is spring cont rolled. Supposing the instrument is redesigned with its spring constant as
before and its p ermanent magnet is replaced with a new permanent magnet which pr oduces twice t he
flux density as before. What would be t he deflect io n if a current of 1 mA is passed through the coil.
T he other features of the PMM C instrument remain the same

A.
45°
B.
135°
C.
90°
D.
180°

Solution:

QUESTION: 21

Flash ADC is

A.
Serial ADC
B.
Parallel ADC
C.
Serial-Parallel ADC
D.
Succeisive approximation ADC

Solution:

QUESTION: 22

In the common base stage of figure. I_CQ = 1mA and β = 7.5 T he input Resistance is

A.
45 k
B.
45
C.
90 k
D.
90

Solution:

*Answer can only contain numeric values

QUESTION: 23

Two point charge 1 μC and 4 μC are placed at (–2, 1, 5) and (1, 3, –1) respectively. T he energy stored
in the field will be (in mJ)

Solution:

QUESTION: 24

The contents of F register in 8085 are 01010001. T his means

A.
S = 0, Z = 1, AC = 1, P = 0 and CY = 1
B.
S = 1, Z = 1, AC = 1, P = 0 and CY = 1
C.
S = 1, Z = 0, AC = 1, P = 0 and CY = 1
D.
S = 0, Z = 0, AC = 0, P = 0 and CY = 1

Solution:

QUESTION: 25

The figure shows a dependent curren t source, it

A.
absorbs 80W
B.
delivers 80W
C.
absorbs 100W
D.
delivers 100W

Solution:

QUESTION: 26

Consider the circuit shown in figure

A.
B.
1/√LC
C.
√LC
D.

Solution:

QUESTION: 27

The power factor for the circuit shown is

A.
0.709 leading
B.
0.809 leading
C.
0.709 lagging
D.
0.809 lagging

Solution:

QUESTION: 28

Consider the transistor circuit shown below

The average power dissipated for one cycle of operation is given by

A.
0.3 mW
B.
0.6 mW
C.
0.9 mW
D.
1.2 mW

Solution:

QUESTION: 29

Peak load power plant s are
P. Wind power plant s
Q. Pumped storage plant
R. Solar power plant
S. Hydro power plant s

A.
P and S
B.
P and Q
C.
Q and S
D.
P, Q and S

Solution:

*Answer can only contain numeric values

QUESTION: 30

A transformer is rat ed at 11 kV/0.4 kV, 500 kVA, 5% reactance. Determine the short circuit MVA of
the transformer when connected to an infinit e bus _______________

Solution:

Since t he t ransformer is connected to an infinite bus, the p.u. impedance of the circuit will be 0.05. i.e. the p.u. im pedance offered by the transformer

QUESTION: 31

A transformer has 2% resistance and 5% reactance. T he volt age regulation at full load 0.8 power factor
lagging

A.
1.6%
B.
3.6%
C.
4.6%
D.
6.6%

Solution:

QUESTION: 32

Consider the following model of a JFET amplifier

Here I_DSS = 8mA & V_P = –4V the value of V_DS will be

A.
3.6 V
B.
4.2 V
C.
2.8 V
D.
4.8 V

Solution:

QUESTION: 33

If in a 1-phase bridge network one of the thyristor is open circuited, then the average output volt age is

Solution:

QUESTION: 34

Improved commutation in DC machine cannot be achieved by

A.
use of interpoles
B.
using brushed of higher resistivit y
C.
increasing reactive voltage
D.
decreasing reactive voltage

Solution:

QUESTION: 35

A stepper motor makes 200 steps per revolution. It is running at 500 steps/sec. The speed in r.p.m. is

A.
2.5
B.
150
C.
200
D.
250

Solution:

*Answer can only contain numeric values

QUESTION: 36

Question 36 to 65 carry Two Marks each

The value of where R is the r egion in the first quadrant bounded by the curves y = x² ,
y + x = 2 and x = 0.

___________________

Solution:

*Answer can only contain numeric values

QUESTION: 37

For we have y = 1 at x = 0. By using Euler met hod and taking the step size 0.1. T he value
of y at x = 0.4 is ________________

Solution:

*Answer can only contain numeric values

QUESTION: 38

If x + y = k is normal to y² = 12x, t hen k is ____________

Solution:

x + y = k is normal t o the curve slope = 1

QUESTION: 39

The range of k such that fee dback con trol syst em h aving charact erist ic equat ion s ( s² + s + 1) (s + 4) + k = 0 will be stable is

A.
k > 0
B.
0 < k < 3.35
C.
0 < k < 3.33
D.
k < 3.33

Solution:

QUESTION: 40

Which unit is adopted for magnit ude measurement in Bode plots?

A.
Degree
B.
Decimal
C.
Decibel
D.
Deviation

Solution:

QUESTION: 41

T he Laplace transformation of e^at cosh(bt) is

Solution:

QUESTION: 42

The transfer funct ion whose approximate plot is shown in figure is

Solution:

*Answer can only contain numeric values

QUESTION: 43

For a unity feedback system with , the value of centroid would be

___________________

Solution:

QUESTION: 44

First derivative of th e signal x(t ) will be

A.
δ(t)
B.
2δ(t)
C.
u'(t ) – 1
D.
None of these

Solution:

QUESTION: 45

Signal x(t) shown below can be represented as

A.
r(t + 1) – r(t) + u(t – 1) – 2u(t – 2)
B.
r(t) – r(t – 1) + u(t – 1) – 2u(t – 2)
C.
r(t – 2) – r(t) + u(t + 2) – 2u(t – 2)
D.
None of these

Solution:

QUESTION: 46

If memory chip size is 256 × 1 bits, the n umber of chips required 1 k byt e memory is

A.
8
B.
12
C.
24
D.
32

Solution:

QUESTION: 47

The mininized version of logic c ircuit shown in figure below is

Solution:

QUESTION: 48

In order to increase the differential input resistance of a bipolar transistor OP-Amp

A.
the emitter resistor in the input differential pair can be decreased
B.
the collector resistor in the input differential pair can be decreased
C.
the emitter resistor in the input differential pair can be increased
D.
the base current can be decreased

Solution:

QUESTION: 49

The current I for the circuit shown below is

A.
–10A
B.
–9A
C.
6A
D.
9A

Solution:

*Answer can only contain numeric values

QUESTION: 50

A power system has 200 buses has 200 buses including 15 generator buses. For the load flow
analysis using Newton-Raphson method in polar co-ordinalies, t he size of the jacobian is p × Q. then
P + Q is _____________________________

Solution:

QUESTION: 51

A 400 MW, 22 kV, 50Hz, 3- phase 4- pole synchronous generator having a rat ed p.f = 0.8, has a
moment of inertia 27.5 × 10³ kg/m². T he inert ia constant (H) will be

A.
2.44 MJ/MVA
B.
0.678 MJ/MVA
C.
678 MJ/MVA
D.
244 MJ/MVA

Solution:

QUESTION: 52

The basic circuit of circulating current system of protection is shown in t he figure, that improve the
fault stability, a stabilizing resistor is connected the points

A.
R and P in series
B.
P and S in series
C.
P and T in series
D.
P and Q in series

Solution:

QUESTION: 53

Consider a transistor circuit the value of is

A.
–1.5 mA/V
B.
–3.5 mA/V
C.
–4.0 mA/V
D.
–4.5 mA/V

Solution:

*Answer can only contain numeric values

QUESTION: 54

A 230 V single phase full converter is feeding a RLE load R = 15, L = 100 mH, and E = 70V. If the average load current is 5A, then the firing angle delay is (in degree) _____________

Solution:

QUESTION: 55

The gain of the convert er shown is, switch connected to 1 and 1' while octcton and moved to 2 and 2'. When

A.
B.
C.
2D-1
D.
0

Solution:

QUESTION: 56

An iron ring of mean length 50 cm has an air gap of 1 mm and a winding of 200 turns. If the permeability of
the iron is 300 when a current of 1A flows through the coil. The flux density is

A.
92.2 mWb/m²
B.
94.2 mWb/m²
C.
96.2 mWb/m²
D.
98.2 mWb/m²

Solution:

QUESTION: 57

Which of the following statement is not correct?

A.
In open circuit test, HV side is kept open
B.
In short circuit test, test is conducted on HV side by making LV as short circuit
C.
In short circuit test we will get full load copper loss by applying rated voltage
D.
In open circuit test we will get Iron losses

Solution:

QUESTION: 58

A 500 kVA transformer has an efficiency of 95% at full load and also at 60% of full load bot h at UPF then
which of the following is true?

A.
P_i = 9.87 kW
B.
P_c = 9.8 kW
C.
P_i = 10.23 kW
D.

Solution:

*Answer can only contain numeric values

QUESTION: 59

An 8-pole DC machine has a rated current of 100A. If the armature is duplex lap wound, then the amount of
current that will flow in each path at rated conditions is (in Amps) ______________

Solution:

Duplex lap wound, t he refore t he number of paths A = mp
= 2 × 8 = 16 paths
Current per each path = 100/16
= 6.25A

*Answer can only contain numeric values

QUESTION: 60

An SCR with heat sink arrangment has ambient temperature of 50°C and junction temperature of 100°C and the average power dissipated of 50 W. If the junction temperature is reduced to 70°C, t hen the percentage reduction in thermal resistance is ________________

Solution:

QUESTION: 61

For a 10 MVA, 132 kV/6.6 kV power transformer with delta-star connections, for the differential
prot ection scheme to circulate a current of 5A in the pilot wires. T he current transformer on HV
side, is

A.
B.
C.
43.73 : 5
D.
50 : 43.73

Solution:

*Answer can only contain numeric values

QUESTION: 62

The value of current I₁ is ____________________

Solution:

QUESTION: 63

A capacitor is added to the portion of the resistance of a multiplier in order to make the pressure coil
circuit non-inductive. T he value of resistance is r while the tot al resistance and inductance of pressure
circuit are respect ively R_P and L. T he value of capacitance C is

Solution:

*Answer can only contain numeric values

QUESTION: 64

A single phase bridge inverter delivers power to a series connected RLC load with R = 2, and ωL = 10.
The periodic time T = 0.1 msec. Take circuit turn off time as 1.5 times t_OFF. Assume the load current
contains only fundamental component . The value of C (in μF) for turn off time 10μsec, is________________