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ENGINEERS ACADEMY
Mock Test Paper
1
1.
2.
3.
Which of the following states is a member of
the Seven Sisters?
10.
(a) Ulaan Baatar
(b) Erdenet
(a) West bengal
(b) Tripura
(c) Darkhan
(d) Altai
(c) Orissa
(d) Bihar
Directions (11–12) : Pick out the opposite
meaning or antonym of the words given below:
Who was the last British Viceroy of India?
(a) Lord lintithgow
(b) Lord wavell
(c) Clement Atlee
(d) Lord Mountbatten
11.
National income is based on the
(a) Total revenue of the state
12.
(b) Production of goods and service
(c) Net profit earned and expenditure made by
the state
5.
6.
7.
8.
9.
The great Asian River Mekong does not run
through
(a) China
(b) Malaysia
(c) Cambodia
(d) Laos
13.
14.
In the atmosphere, the layer above the
troposphere is
(a) Mesosphere
(b) Exosphere
(c) Therosphere
(d) Stratosphere
15.
'Phycology' is the branch of botany in which we
study about
(a) Algae
(b) Fungi
(c) Bacteria
(d) Virus
16.
Isletes of langerhans is situated in
(a) Spleen
(b) Brain
(c) Pancreas
(d) Liver
MULTIPLICITY
(a) Finite
(b) Uniformality
(c) Magnitude
(d) Infinite
NAIVE
(a) Subtle
(b) Energise
(c) Spotless
(d) Clever
Directions (13–14) : Pick out the nearest correct
meaning or synonym of the words given below:
(d) the sun of all factors of income
4.
What is the capital of Mangolia?
17.
ATTENUATE
(a) Repent
(b) Make thin
(c) Force
(d) Divide
VINDICTIVE
(a) Revengeful
(b) Triumphant
(c) Strategic
(d) Demonstrative
I will wait for you _______ the car. It's raining
heavily
(a) onto
(b) at
(c) into
(d) in
_______ the traffic jams, we couldn't get there
on time.
(a) Although
(b) So
(c) Because
(d) Because of
We chose the prettiest, best behaved puppy. She
was certainly _______.
The Internation Widow's Day is celebrated across
the world on
(a) the apple of the crop
(a) 23 June
(b) 24 June
(c) The ice of the crop
(c) 25 June
(d) 26 June
(d) The top of the crop
Which of the following is not associated with
UNO
(b) The cream of the crop
18.
Darling, could you _______ the care? There's a
large puddle near my door, I can't get out
(a) ILO
(b) WHO
(a) Back up
(b) Back out
(c) ASEAN
(d) All of the above
(c) Back in
(d) Back down
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ENGINEERS ACADEMY
Mock Test Paper
2
19.
Make a meaningful sentence by arranging the
parts of the sentence in a sequence
P. of the hotel where she had put up
A variable reluctance type tachometer has 150
teeth on rotor. The counter records 13500 pulse/
sec. The rotational speed is
Q. a french woman who had come
(a) 4800 rpm
(b) 5400 rpm
R. to calculate committed suicide
(c) 6000 rpm
(d) 7200 rpm
S. by jumping from the first floor balcony
20.
21.
22.
(a) PQRS
(b) QPRS
(c) QRSP
(d) SRPQ
26.
27.
A person who insists on something
(a) Disciplinarian
(b) Stickler
(c) Instantaneous
(d) Boaster
A moving coil instrument has a resistance of 0.5
 and a full scale deflection of 0.1A. To convert
it into an ammeter of 0 – 10A the shunt resistance
should be
28.
(a) 0.2 m
(b) 0.4 m
(c) 0.1 m
(d) 0.05 m
The adjustment of position of shading bands, in
an energy meter, is done to provide
(a) friction compensation
(a) 0.004 
(b) 0.005 
(b) creep compensation
(c) 0.05 
(d) 0.1 
(c) bracking torque
The coil of a D Arsonal go galvanometer has N
turns. If flux density is B, current is I and area
of coil is A, the deflecting torque is
(a)
NBI
A
(d) none of the above
29.
(b) NBIA
NIA
(d) N2IAB
B
In low power factor wattmeter, the pressure coil
is connected
In two wattmeter of 3 - phase power measurement,
when does one wattmeter reads negative
(a) When power factor is less than zero
(b) When power factor is greater than 0.5 lagging
(c)
23.
The deflection of a D' Arsonal galvanometer is
measured through a mirror and scale. The mirror
is 1m away from the light source. The mirror is
mounted on, the moving system. If mirror rotates
through 0.2 rad the displacement on the scale is
(c) When power factor is less than 0.5
(d) When power factor is unity.
30.
(a) to the supply side of current coil
The current I1 through the 5  resistor in the
network shown in the figure is
(b) to the load side of current coil
I1
(c) into either (a) or (b)
(d) across the mains
24.
25.
20
Two resistance R1 = 18.7  and R2 = 3.624 
in series. The total Resistance to the appropriate
number of significant figure
10
5
+ 100V
(a) 22.324 
(b) 22.32 
(a) 8.58 A
(b) 54 A
(c) 22.3 
(d) 22 
(c) 11.66 A
(d) 15 A
Which of the following instrument can be used
for DC as well as AC upto few MHz
(a) Moving iron instrument
(b) Thermo couple instrument
31.
The transfer function of the system H(s) =
s2 – s  1
s2  2s  1
(c) Induction instrument
(a) Low pass filter
(b) High pass filter
(d) Moving coil instrument
(c) Band pass filter
(d) Band stop filter
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ENGINEERS ACADEMY
Mock Test Paper
3
32.
Consider the Network shown in figure, the Y21
parameter of the Network is
37.
If the number of edge in a complete graph of the
vertices is
3
I2
I1
2
2
2
V1
V2
38.
n(n – 1)
2
(a) n (n – 1)
(b)
(c) n
(d) n – 1
Steady state value of the current in the circuit
1
S
33.
(a)
1

6
1
(b) – 
6
(c)
1

2
1
(d) – 
2
The current waveform in pure resistor at 10 is
shown in figure power dissipated in the resistor
is
39.
(b)
(c) 2 A
(d) 1 A
For a given dielectric, with increase in
temperature the ionic polarizability
(b) Decrease
9
(c) Remains same
(d) Fluctuates
3
6
40.
t
Which one of the following pairs is not correctly
matched
(a) 7.29 W
(b) 52.4 W
(a) Copper : Diamagnetic
(c) 135 W
(d) 270 W
(b) Sodium : Anti ferromagnetic
(c) Iron : Ferromagnetic
Superposition theorem is not applicable to
network containing
(d) Ferrite : Ferrimagnetic
(c) Dependent current source
Which one of following statements is correct ?
A ferrite core has lower specific eddy current
loss compared to an iron core because the iron
core has
(d) Transformer
(a) Higher electrical resistance
In a two port network, the condition for
reciprocity in term of ‘h’ parameter is
(b) Lower electrical residence
(a) h12 = h21
(b) h11 = h12
(d) Lower permeability
(c) h11 = h22
(d) h12 = h21
41.
(b) Dependent voltage source
36.
1
A
2
(a) 0 A
(a) Increase
(a) Nonlinear element
35.
0.5H
i
0
34.
1V
(c) Higher permeability
42.
In a series R – L – C circuit, R = 2 k, L = 1H,
(a) Short and narrow (b) Tall and narrow
1
C=
F. The resonant frequency is
400
(c) Short and wide
43.
(a) 2 × 104 Hz
4
(c) 10 Hz
1
(b)
× 10 4 Hz

4
(d) 2 × 10 Hz
The hysteresis loop for the material of the core
of a transformer should be
(d) Tall and wide
What is the packing fraction of a BCC (body
centered cubic) unit cell ?
(a) 0.34
(b) 0.67
(c) 0.44
(d) 0.55
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ENGINEERS ACADEMY
Mock Test Paper
4
44.
45.
46.
47.
48.
49.
50.
51.
With increase in applied frequency, the dielectric
loss in a material will
(a) Increase
(b) Decrease
(c) Remain constant (d) Become zero
Quartz and BaTio3 exhibit which of the following
properties
(a) Magnetostriction (b) Ferromagnetism
(c) Piezoelectricity
(d) Ferroelectricity
A semiconductor has a band gap of 2 eV. The
wavelength of radiation emitted from the
semiconductor when electrons and holes
recombine is
(a) 625 nm
(b) 625 m
(c) 625 mm
(d) 625 cm
Materials in superconducting state have the
property of
(a) Absorbing magnetic field
(b) Repelling magnetic field
(c) Absorbing electric field
(d) Repelling electric field
Natural commutation of a thyristor takes place
when
(a) Anode current becomes zero
(b) Gate current becomes zero
(c) Voltage across the device becomes zero
(d) Voltage across the device becomes negative
In 3 –  full wave rectifier duration of pulse and
diode conduction
(a) 60o, 120o
(b) 60o, 60o
(c) 120o, 60o
(d) 120o, 120o
Triacs can not be used in ac voltage regulator
for a
(a) Resistive load
(b) Back emf load
(c) Inductive load
(d) Resistive inductive load
A single phase converter is fed by a source having
an inductance L. If load current is Io, the decrease
in output voltage due to overlap is
0.5L
(a)

L
Io
(c)

L
Io
(b)
4
L
Io
(d)
3
52.
53.
54.
55.
56.
57.
Current derating may be necessary when
thyristors are operating in
(a) series
(b) parallel
(c) series or parallel (d) None of the above
An SUS is
(a) exactly similar to SCR but with higher rating
(b) Similar to UJT.
(c) PUT and avalanche diode connected in
antiparallel
(d) SCR and avalanche diode connected in
parallel
A 3 kV Circuit use SCR of 800 V rating. If
derating is 25% the number of SCRs in series is
(a) 4
(b) 5
(c) 6
(d) 8
A single phase half wave rectifier is feeding a
resistive load when  = 0°, dc output voltage is
127 V. when  = 30°, the dc output voltage will
be about
(a) 127 V
(b) 120 V
(c) 110 V
(d) 100 V
In a 3-phase semiconverter, the dc output voltage
for a certain firing angle is 50% of the maximum
possible value. The firing angle is
(a) 30o
(b) 60o
(c) 90o
(d) 120o
A particular control system described by the
following state equation
   0 1  X  0  U and
X
 –2 –3
1 


 
Y   2 0 X
The transfer function of this system is
Ys
1
(a) U s = 2
  5s  3s  1
Ys
2
(b) U s = 2
  5s  3s  1
Ys
2
(c) U s = 2

s  3s  2
Ys
4
(d) U s = 2
  s  3s  2
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ENGINEERS ACADEMY
Mock Test Paper
5
58.
59.
60.
A property of phase lead compensation is that the
(a) Overshoot is increased
(b) Bandwidth of closed loop system is reduced
(c) Rise-time of closed loop system is reduced
(d) Gain margin is reduced
The output of first order hold between two
consecutive sampling insulant is a
(a) Constant
(b) Quadratic function
(c) Ramp function
(d) Exponential function
A control system has G(s) H(s)
=
61.
K
2
s(s  4)(s  4s  20)
63.
64.
65.
(c)
67.
68.
c(t)
(a) K > 0
(b) K < 0
(c) 0 < K < 42
(d) 0 < K < 60
For a multimode step index fibre with glass core
(n1 = 1.5), the acceptance angle is required to be
20.2o. Find the refractive index of cladding (n2).
(a) 1.46
(b) 2.04
(c) 2.56
(d) 3.05
The figure of merit for a satellite transmitter is
(a) G/T ratio
(b) C/N ratio
(c) EIRP
(d) None of these
The energy gap Eg of a PIN photodetector should
be _______ photon energy of light (hf)
(a) greater than
(b) equal to
(c) smaller than
(d) independent of
A voice signal band limited to 3.4 kHz is sampled
at 8 kHz and pulse code modulated using 64
quantization levels. Ten such signals are time
division multiplexed using one 5-bit
synchronizing word. The minimum channel
bandwidth is
(a) 400 KHz
(b) 520 KHz
(c) 500 KHz
(d) 450 KHz
The number of bits per sample in a PCM system
is increased from 8 to 16. The bandwidth of the
system will increase.
(a) 8 times
(a) One
(b) Two
(c) Three
(d) Zero
The feedback system shown in figure below is
stable for all value of k given by
k
s(s+1) (s+6)
62.
66.
69.
70.
1
times
2
(b) 2 times
(d) 2
In the present day standard digital voice
communication, the amplitude of the voice signal
is sampled at a rate of around
(a) 2000 samples/s
(b) 800 samples/s
(c) 16000 samples/s
(d) 8000 samples/s
An amplitude modulated amplifier has a radio
frequency output of 50 W at 100% modulation.
The internal loss in the modulator is 10W the
unmodulated carrier power is
(a) 11.25 W
(b) 20W
(c) 60 W
(d) 40 W
The resonant frequency of an RF amplifier is 1
MHz and its bandwidth is 10 KHz. The Q factor
will be
(a) 10
(b) 100
(c) 0.01
(d) 0.1
Following is not the purpose of modulation
(a) Multiplexing
(b) Effective radiation
(c) narrowbanding
(d) Increase in signal power
71.
The following program.
main ( )
{
int i = 2;
{
int i = 4, j = 5;
printf(“%d%d, i, j);
}
printf(“%d%d”, i, j);
}
(a) Will not compile successfully
(b) Prints 4525
(c) Prints 2525
(d) None of above
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ENGINEERS ACADEMY
Mock Test Paper
6
72.
The PC has typically
79.
(a) 5 to 10 KB of main memory
(b) 10 to 100 KB of main memory
(c) 100 to 256 KB of main memory
(d) 256 KB to 1 MB of main memory
73.
A binary tree in which every non-leaf node has
non empty left and right subtrees is called a
strictly binary tree. Such a tree with 10 leaves
80.
How many 1's are present in the binary
representation of (4 × 4096) + (9 × 256) + (7
× 16) + 5.
(a) 8
(b) 9
(c) 10
(d) 11
Determine the drain current ID for the following
circuit
16V
(a) cannot have more than 19 nodes
2k
(b) has exactly 19 nodes
D
(c) has exactly 17 nodes
(d) cannot have more than 17 nodes
74.
75.
76.
+
The depth of a complete binary tree with n nodes
is (log is to the base two).
(a) log (n + 1) – 1
(b) log (n)
–
(c) log (n – 1) + 1
(d) log (n ) + 1
+
The positivity equivalent of the prefix * + ab – cd
is
(a) ab + cd – *
(b) ab cd + – *
(c) ab + cd * –
(d) ab + – cd *
Stacks cannot be used to
81.
(a) evaluate an arithmetic expression in postfix
form
(b) implement recursion
(c) Convert a given arithmetic expression in infix
form to its equivalent postfix form
82.
(d) allocate resources (like CPU) by the
operating system
77.
78.
Which of the following abstract data types can
be used to represent a many to many relation?
1. Tree
2. Plex
3. Graph
4. Queue
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
In hexadecimal arithmetic, the result of (77)16 –
(3B)16 is equal to
83.
84.
VGS
IDSS = 10 mA
Vp = – 8V
– S
(a) 4.324 mA
(b) 5.62.5 mA
(c) 3.25 mA
(d) 4.52 mA
A highly stable resonance characteristics is the
property of a _______ oscillator.
(a) Hartley
(b) Colpitts
(c) Crystal
(d) Weinbridge
In the output voltage of a bridge rectifier is 100V,
the PIV of diode will be
(a) 100 2V
(b)
200
V

(c) 100 V
(d)
100
V
2
The mobility of electrons in a material is
expressed in unit of
(a) V/s
(b) m2/V – s
(c) m2/s
(d) J/K
The merging of a hole and electron is called
(a) 3 D16
(b) 3C16
(a) Recombination
(b) Covalent bonding
(c) 6016
(d) 7316
(c) Thermal union
(d) none of the above
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ENGINEERS ACADEMY
Mock Test Paper
7
85.
86.
87.
88.
89.
90.
91.
92.
93.
A silicon diode has a saturation current of 7.5
A at room temperature 300K. Calculate the
saturation current at 400 K.
(a) 7.68 mA
(b) 5.23 mA
(c) 64 A
(d) 8.23 mA
The mobility of free electrons and holes in pure
germanium are 3800 and 1800 cm 2 /V-s
respectively. The intrinsic conductivity for Ge
for ni = 2.5 × 1013 cm–2 at room temperature is
94.
Atomic and molecular resonance is observed in
many substances
(a) at microwave frequencies
(b) at low frequencies
(c) at frequencies used in AM broadcast
(d) at both (b) and (c)
95.
Consider the following statements.
(a) 4.32 S/cm
(b) 6.43 S/cm
1. Impedance of Gunn diode is about tens of
ohms.
(c) 3.33 S/cm
(d) 0.0224 S/cm
2. Impedance of IMPATT diode is a few ohms.
The value of IE for the transistor circuit if IC =
80 mA and  = 170.
(a) 25.125 mA
(b) 11.8812 mA
(c) 80.47 mA
(d) 62.412 mA
3. Impedance of IMPATT diode are of same
order.
4. Impedance of IMPATT diode is more than
that of Gunn diode.
The conductivity of an N – type semiconductor
is 10 s/m and its electron mobility is 50 × 10–4
m2/V-s. The electron concentration is
Which of the above statement is correct ?
(a) all
(b) 1 and 2 only
(a) 5 × 1021 m–3
(b) 2.5 × 1021 m–3
(c) 1, 2 and 3
(d) 1, 2 and 4
(c) 1250 m–3
(d) 12.5 × 1021 m–3
96.
The maximum signal propagation time of a
geosynchronous satellite transmission is about
_______ millisecond.
(a) 540
(b) 270
(c) 135
(d) 1080
97.
In selecting a satellite system, the first determine
factor is
(a) EIRP
(b) antenna size
(c) coverage area
(d) antenna gain
When the peak power is 100,000 watts and the
average power is 600 watts then the duty cycle
is
98.
A resistive microwave load with ZL = 150 is
connected to 50  coaxial line. SWR is
(a) more than 3
(b) Less than 3
(c) equal to 3
(d) Either (a) or (c)
Varactor diodes use
(a) Silicon
(b) GaAs
(c) Either (a) or (b)
(d) Neither (a) nor (b)
The working of a staircase switch is a typical
example of the logical operation
(a) OR
(b) NOR
(c) Exclusive-OR
(d) Exclusive-NOR
(a) 0.006 %
(b) 0.06 %
In a ripple counter using edge triggered JK flip
flop, the pulse input is applied to the
(c) 0.6 %
(d) 6 %
(a) clock input of all flip flops
A half wave dipole used at a frequency of 600
MHz has a length of
(a) 10 m
(b) 3 m
(c) 0.25 m
(d) 1 m
The noise figure of a receiver is 1.6. Its equivalent
noise temperature is
(a) 464.00 K
(b) 174.00 K
(c) 108.75 K
(d) 181.25 K
99.
(b) clock input of one flip flop
(c) J and K input of one flip flop
(d) J and K input of all flip flops
100. If you want to design a boundary counter, you
should prefer a flip flop of
(a) D-type
(b) SR-type
(c) latch
(d) JK type
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ENGINEERS ACADEMY
Mock Test Paper
8
101. Suppose the largest n-bit binary number require
'd' digits in decimal representation. Which of the
following relations between 'n' and 'd' is
approximately correct?
(a) d = 2n
(b) n = 2d
(c) d < n log102
(d) d > n log102
102. The output of the multiplexer circuit in following
figure can be represented by
C
C
C
C
106. Which of the following logic families well suited
for high speed operation ?
(a) TTL
(b) ECL
(c) MOS
(d) CMOS
107. Assume that a slow memory device is interfaced
with an 8085 microprocessor and an 1-wait state
generating circuit is connected to READY input.
Then the execution time needed for the following
program would be
LDA TEMP
MUX
SELECT
B
ADD B
LHLD TEMP
(a) 43 T-states
(b) 30 T-states
(c) 40 T-states
(d) 33 T-states
108. A single instruction to clear the lower four bits
of the accumulator in 8085 assembly language is
A
(a) AB + BC + CA + BC
(b) A + B + C
(a) XRI 0FH
(b) ANI F0H
(c) XRI F0H
(d) ANI 0FH
109. Consider the following program
(c) A + B
ORG 8000 H
(d) ABC + ABC + ABC
START : LXI H, 8000 H
103. For a NAND latch, both SET and RESET inputs
are not allowed to be low (0) simultaneously
because
MOVE A, L
ADD H
JM XYZ
(a) The output of the NAND latch will not be
stable
RST 0
(b) Both outputs of the NAND latch will be low
(0)
XYZ :
(c) The output of the NAND latch will not be
complementary to each other
Pick out the correct statement from the following
(d) None of these
104. To modify a half adder circuit into a half
subtractor circuit, we need an extra _______ gate.
PCHL
HLT
(a) The program will branch to 0000H after JM
XYZ
(b) The program will branch to 0008H after JM
XYZ
(a) NOT
(b) AND
(c) The program will halt the processor
(c) OR
(d) None of these
(d) The program will be repeated infinitely
105. For multi-bit comparision with cascaded
comparator ICS, the cascading inputs are utilized
if the input condition of the present IC is found
to be
110. The execution of RST n instruction causes the
stack pointer to
(a) Increament by two
(b) decrement by two
(a) A > B
(b) A = B
(c) remain unaffected
(c) A < B
(d) None of these
(d) none of the above
# 100-102 Ram Nagar, Bambala Pulia,
Pratap Nagar, Tonk Road Jaipur-33
# 40-Kailashpuri, Near Khandaka Hospital
Gopalpura, Tonk Road, Jaipur-18
Contact: 0141-6540911, +91-8094441777
Contact: 0141-6540910, +91-8094441999
ENGINEERS ACADEMY
Mock Test Paper
9
111. Which of the following interrupt is non
maskable?
(a) TRAP
(b) RST 7.5
(c) INTR
(d) RST 6.5
112. A higher value of standing wave ratio indicates
(a) least mismatch between line and load
(b) Greater mismatch between load and line
(c) number of nodes is equal to the number of
antinodes.
(d) None of the above
113. An air line has a characteristic impedance of
70 and a phase constant of 3 rad/m at 100MHz.
The inductance per meter and capacitance per
meter of the line
(a) 334.2 pF/m, 68.2 nH/m
(b) 72.2 pF/m, 334.2 nH/m
(c) 68.2 pF/m, 334.2 nH/m
(d) 68.2 pF/m, 72.2 nH/m
114. Antenna reciprocity is put to use in
(a) Radar system
(b) Commercial broadcast
(c) TV broadcast system
(d) None of the above
115. The wave in waveguide has
(a) Group velocity inversely proportional to
wavelength
(b) Larger frequency than in free space
(c) Diminishing wavelength than in free space
(d) larger wavelength than in the free space
116. How many degenerate dominant modes exist in
a rectangular resonant cavity for which a = b =
c?
(a) 0
(b) 2
(c) 3
(d) 
117. In RISC architecture access top registers is made
as a block and register file in a particular register
can be selected by using:
(a) Multiplexer
(b) Decoder
(c) Scrutator
(d) Adder
118. The operation of a staircase switch best explains
the
(a) OR operation
(b) AND operation
(c) Exclusive NOR operation
(d) Exclusion OR operation
119. Consider the declaration int a = 5, *b = and a;
The statement prinf ("%d", a * b); prints
(a) 25
(b) Garbage
(c) 5 × address of b
(d) An error message
120. A - 3ary tree is a tree in which every internal
mode has exactly 3 children. The number of leap
nodes in such a tree with 6 internal nodes will
be
(a) 10
(b) 23
(c) 17
(d) 13

# 100-102 Ram Nagar, Bambala Pulia,
Pratap Nagar, Tonk Road Jaipur-33
# 40-Kailashpuri, Near Khandaka Hospital
Gopalpura, Tonk Road, Jaipur-18
Contact: 0141-6540911, +91-8094441777
Contact: 0141-6540910, +91-8094441999