| No. |
Question |
| 1 |
A surface height profile is given
by, y = a + b sin
(0 x l)
where a, b, l are constants and x is the horizontal coordinate.
The roughness of the surface, based on absolute deviation, is |
| Options |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
A |
|
| 2 |
For N-bit Successive Approximation ADCs, other
parameters such as clock frequency remaining constant, the
conversion time is proportional to
|
| Options |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
B |
|
| 3 |
The radius of a sphere is given as (40.0 ±
0.5)mm. The estimated error in its mass is: |
| Options |
| A) ± 3.75% |
B) ± 1.25% |
| C) ± 12.5% |
D) ± 0/125% |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
B |
|
| 4 |
A zero error in a vernier caliper is termed as |
| Options |
| A) accidental error |
B) interference error |
C) systematic error
|
D) random error |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
B |
|
| 5 |
Given the discrete-time sequence x[n] = [2, 0,
-1,-3, 4, 1, -l, X(ejp) is |
| Options |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
C |
|
| 6 |
Linear variable differential transformer has |
| Options |
| A) two primary coils connected in phase and a
secondary coil |
B) two primary coils connected in opposition and a
secondary coil |
| C) one primary coil and two secondary coils
connected in phase |
D) one primary coil and two secondary coils
connected in opposition |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
D |
|
| 7 |
Position sensor units having a constant
sensitivity of lV/mm are used for feedback in number of position
controlled system units, each having an overall forward path dc gain
of 50. If the random dc bias errors in the outputs of various sensor
units are characterized as normal with mean 0 and standard deviation
(s) 0.01V, for a constant set point of
5V, the true position outputs of the various controlled system units
can be characterized as normal with
|
| Options |
A) mean of 5.0, s
of 0.01
|
B) mean of 0.0, s
of 0.01
|
C) mean of 5.0, s
of 0.0098
|
D) mean of 4.902, s
of 0.0098
|
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
C |
|
| 8 |
The refractive index of the core of an optical
fiber is n1and that of the cladding is nf If (n1
– n2) = Dn, then the fiber
can be made single mode with numerical aperture unchanged by |
| Options |
| A) reducing core diameter and increasing Dn |
B) reducing both core diameter and Dn
|
C) reducing core diameter alone
|
D) reducing Dn alone |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
D |
|
| 9 |
For a suppressed carrier amplitude modulator (AM-SC) system, the
carrier and the modulating inputs are xc (t) = cos wc
t and xm (t) = 0.5 sin wm
t, respectively. The output of the system is proportional to
|
| Options |
| A) sin (wc +
wm) t – sin (wc
- wm) t |
B) sin (wc
+ wm) t +
cos (wc -wm)
t |
| C) (1 + 0.5 sin wm
t) cos wc t |
D) (1- 0.5 sin wm
t) cos wc t |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
B |
|
| 10 |
The 3-dB cut-off frequency of a first analog high pas filter is wc the
output will have a phase shift of
|
| Options |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
B |
|
| 11 |
In an INTEL 8085 microprocessor the
ADDRESS-DATA bus and the DATA bus are |
| Options |
| A) Non multiplexed |
B) Multiplexed |
| C) Duplicated |
D) Same as CONTROL bus |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
B |
|
| 12 |
A 3 ½ digit nultimeter has an accuracy specification of (± 0.5%
of reading ± 5 counts). If the meter reads 2.00 mA on a full scale
of 20mA, the worst-case error in the reading is
|
| Options |
| A) 0.5% |
B) 2.5%
|
| C) 3.0% |
D) 5.5%
|
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
C |
|
| 13 |
The measurements of a source voltage are 5.9V,
5.7V and 6.1V. The sample standard deviation of the readings is |
| Options |
| A) 0.013 |
B) 0.04 |
| C) 0.115 |
D) 0.2 |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
D |
|
| 14 |
Consider the following systems:
System 2: G(s) =
System 1: G(s) =
The true statement regarding the system is |
| Options |
A) Bandwidth of system 1 is greater than the
bandwidth of system 2
|
B) Bandwidth of system 1 is lower than the
bandwidth of system 2
|
C) Bandwidth of both the systems are the same
|
D) Bandwidth of both the systems are infinite
|
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
A |
|
| 15 |
The transfer function of a system is
The steady-state gain of the system to a unit-step input is |
| Options |
| A)
|
B) 0 |
| C) ¥ |
D) not possible to be determined |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
C |
|
| 16 |
In 8085 microprocessor, CY flag may be set by
the instruction |
| Options |
| A) SUB |
B) INX |
| C) CMA |
D) ANA |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
A |
|
| 17 |
V1 and V2 are the input
voltages of an instrumentation amplifier. The output of the
instrumentation amplifier is found to be 100(V1 – V2)
+ 10-4 (V1 + V2). The gain and the
common mode rejection ratio (CMRR) of the instrumentation amplifier
respectively are |
| Options |
A) (50, 60 dB)
|
B) (50, 120 dB)
|
C) (100, 60dB)
|
D) (100, 120 dB)
|
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
C |
|
| 18 |
The sequence x[n] whose z-transform is X[z] = e(1/Z) is
|
| Options |
| A)
u[n] |
B)
u[-n] |
| C) (-1)n
u[n] |
D)
u[-n-1] |
|
| Your Answer |
(Right
Answer) |
|
| 19 |
The time taken by an ionized atom, of mass m kg
and charge e Coulombs, pulsed into a field-free region with V volts,
to reach a detector L meters away is |
| Options |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
B |
|
| 20 |
The clock frequency of a timer-counter is
10MHz. The timer-counter is used in the period mode and the
input to the timer-counter is a square wave of frequency 2 kHz. The
display of the timer-counter will show a value |
| Options |
| A) 200 |
B) 2000 |
| C) 5000 |
D) 50000 |
|
| Your Answer |
(Not
Answered) |
| Correct Answer |
C |
|
