ENME 351
HW#1 Solutions
Electronics & Instrumentation II
Homework #1 Solutions
Problem 1 (Pb 1.12 from text)
Solution:
From Table 1.6, the input and
output ranges are
r i = 5 mV
r o = 5 mV
By inspection of the data, the maximum hysteresis occurs at x = 3.

ENME351
Homework 4
Solutions
PROBLEM 3.24
KNOWN: RCL circuit: L = 2 H; C = 1 F; R = 10k
Ei (t) = 1 + 0.5 sin 2000t V
I(0) = dI(0)/dt = 0 (initial conditions)
ASSUMPTIONS: Values for R, C, L remain constant.
FIND: Governing equation and steady output form

ENME351
Homework 8
Due Mon, May 10
[1] A simple MEMS accelerometer can be realized using a single cantilever beam. In this case
the acceleration generates a distributed load (w = ma/L) along the length of the beam (L), where
m is the beam mass and a is th

ENME351
Homework 7
SOLUTIONS
[1] An optical fiber fabricated from differentially-doped glass (silica) has a refractive index for
the core of 1.5 and a refractive index for the cladding of 1.3. Determine the critical angle,
relative to the fiber radial nor

ENME351
Homework 6 SOLUTIONS
PROBLEM 12.1
KNOWN: A linear potentiometer having
D = 0.1 mm
e = 1.7 10-8 -m
R = 1 k
FIND:
a) for a core diameter of 1.5 cm, determine the range
b) plot loading error as a function of displacement
SOLUTION:
a) In order to dete

Name:_
ENME 351 SAMPLE FINAL EXAM
PLEASE PAY ATTENTION TO THE FOLLOWING:
1. Be neat.
2. State all assumptions made and provide steps.
3. Maximum time allowed for exam:120 minutes (8:00am-10:00am).
Problem 1: (40) 10 problems, 3 pts each.
1) A thermistor h

ENME351
Homework 1 Solutions
PROBLEM 1.11
KNOWN: Calibration data of Table 1.5
FIND: K at x = 5, 10, 20 cm
SOLUTION:
The data reveal a linear relation on a log-log plot suggesting y = bxm. That is:
log y = log (bxm) = log b + m log x
Y = B + mX
or
From th

ENME 351: HW 2 Introduction to Measurement
Due 5 PM on Wednesday, February 9, 2011
Spring, 2011
JK/SB
1. Decibels quantify the ratio of a power level to a reference power. In electronics, since the
power depends on the square of the voltage (for a given i

ENME 351: HW 1 Introduction to Measurement
Due 5 PM on Wednesday, February 2, 2011
Spring, 2011
JK/SB
1. Provide two examples of a measurement or set of measurements that you may need to make in
the future. What is the purpose of the measurement? What wil

ENME 351: HW 3 Introduction to Fourier Series
Due 5 PM on Wednesday, February 16, 2011
Spring, 2011
JK/SB
1. Calculate the mean and RMS values for the original, half-wave rectified, and full-wave
rectified voltage signals shown below. The period T = 100 m

Midterm Exam SOLUTIONS
ENME 351, Spring 2010
40 pts 1. Short Answers
(a) The full-scale output range (FSR) of a particular sensor systemis 0-10 V. The
system includes analog-to-digital conversion with a 12-bit quantizer. How many
states can the quantizer

ENME351
Homework 3 Solutions
PROBLEM 3.4
KNOWN: System model equation
K = 1 unit/unit
F(t) = 100U(t)
y(0) = 75 units
FIND: y(t)
SOLUTION
(a) The solution to the system model was shown to be given by the general form,
y(t) = y + (y(0) - y )e-t/
where here,

UNIVERSITY OF MARYLAND AT COLLEGE PARK
Department of Mechanical Engineering
ENME 351 - Electronics and Instrumentation II - Dr. Hassouneh
Midterm Exam
Thursday, 3/29/2007
Closed-book, closed-notes, ONLY a two-sided A4 page of notes is allowed, calculators

ENME 351
HW#2-Solutions
Electronics & Instrumentation II
Homework #2 Solutions
Problem 1 (Pb 2.10 from text)
Express the function
in terms of
(a) a cosine term only; and
(b) a sine term only.
y(t) =4sin(2t)+ l5cos(2t)
We can use the trigonometric identiti

ENME 351
HW#3 Solutions
Electronics & Instrumentation II
Homework #3 Solutions
Problem 1 (Pb3.1 from text)
(Hint: assume a zero-order system)
Solution
The system is modeled as a zero order system
y (t ) = KF (t )
Assume that the input is constant (not a f

ENME 351
HW#5 Solutions
Electronics & Instrumentation II
Homework #5 Solutions
Problem 1
The circuit shown in Figure 1 has
Determine the value required for R2 so the dc component of the output vo(t) is zero.
Figure 1
Solution:
Since there is negative feed

ENME 351 HW#6 Solutions Electronics & Instrumentation 11
Homework #6 Solutions
Problem 1 Consider the operational amplifier circuit shown in Figure la,
(a) Derive the transfer function for the circuit, i.e., Van/Vina,
(b) Find the magnitude and phase o

UNIVERSITY OF MARYLAND AT COLLEGE PARK
Department of Mechanical Engineering
ENME 351 - Electronics and Instrumentation II - Dr. Hassouneh
FINAL EXAMINATION
Saturday, May 13, 2006 ,
Closedbook, closednotes, ONLY a twosided A4 page of notes is allowed, calc

ENME351
Homework 2 Solutions
PROBLEM 7.3
KNOWN: T(t) = 2 sin 4t oC
fs = 4 and 8 Hz; N = 128
FIND:
Compute the Fourier transform from the resulting series.
SOLUTION
The fundamental frequency of this signal is f1 = 2 Hz. From the
Sampling theorem, an approp

Redesign Project Assignment
Document Dated: 3/11/10
Objectives:
Working as a product development team, to redesign a subsystem or component of the DeWALT
DC330 Jigsaw.
To document the redesign work appropriately and communicate the results to others eff