Engineering » Page 83

Engineering

Define an ADT for a two-dimensional array of integers. Specify precisely the basic operations that can be performed on such arrays. Next, imagine an application that stores an array with 1000 rows and 1000 columns, where less than 10,000 of the array values are non-zero. Describe two different implementations for such arrays that would be more space efficient than a standard two-dimensional array implementation requiring one million positions.

Answer Answers (1)

Engineering

How well does the theoretical model predict the measured force for the symmetric and asymmetric impact surfaces?

Answer Answers (1)

Fernando Terrell

Engineering

A steel alloy is known to contain 93.8 wt% Fe, 6.0 wt% Ni, and 0.2 wt% C. Assume that there are no alterations in the positions of other phase boundaries with the addition of Ni. (a) What is the approximate eutectoid temperature of this alloy

Answer Answers (1)

Leonel Melendez

Engineering

One cycle of the power dissipated by a resistor (R=800 Ω) is given by

P (t) = 0.03125 W, 0≤t<12.0 sP (t) = 0.03125 W, 0≤t<12.0 s

P (t) = 0 W, 12.0≤t<30 sP (t) = 0 W, 12.0≤t<30 s

This periodic signal repeats in both directions of time.

What is the amplitude of the PWM voltage signal applied across the 800-Ω resistor?

Answer Answers (1)

Kelton Whitehead

Engineering

An ac waveform has an RMS voltage of 60 back. What is the waveforms peak voltage? A. 68.8 vac B. 84.4 vac 46.9 vac 60.0 vac

Answer Answers (1)

Engineering

Problem 2 (a) A sinusoid with a frequency of 2Hz is applied to a sampler/zero-order hold combination. The sampling rate is 10Hz. List all the frequencies present in the output that are less than 50Hz. (b) Repeat part (a) if the input sinusoid has a frequency of 8 Hz.

Answer Answers (1)

Engineering

Write using about 10-15 lines for each of the six materials (metals, ceramics, glasses, polymers, composites, and semiconductors). For each, list at least three most important properties, two drawbacks, three well-known examples, and three well-known applications.

Answer Answers (1)

Engineering

python Write a program that prompts the user to enter the month and year and displays the number of days in the month. For example, if the user entered month 2 and year 2000, the program should display that February 2000 has 29 days. If the user entered month 3 and year 2005, the program should display that March 2005 has 31 days.

Answer Answers (1)

Engineering

In dell what is inside the computer

A gigabits

B Microchips

C software

D all apply

Answer Answers (2)

Engineering

What is the definition of phase?

Answer Answers (1)

Engineering

For laminar flow over a hot flat plate, the local heat transfer coefficient decreases with distance because (select all that are correct):

A. The velocities near the plate are decreasing.

B. The thickness of the heated region near the plate is increasing.

C. The fluid temperatures near the plate are increasing.

Answer Answers (1)

Engineering

A signal suspected to be of the nominal form y (t) = 5 sin 1000 mV is measured by a first-order instrument having a time constant of 100 ms and K 1 V/V. It is then to be passed through a second-order amplifier having a K = 100 V/V, a natural frequency of 15,000 Hz, and a damping ratio of 0.8. What is the expected form of the output signal, y (t) ? Estimate the dynamic error and phase lag in the output. Is this system a good choice here? If not, do you have any suggestions?

Answer Answers (1)

Engineering

What is deformation?

Answer Answers (2)

Engineering

The vast majority of automobile engines operate on the

OA. two-stroke cycle

B. rotary design

C. diesel design

D. four-stroke cycle

Answer Answers (1)

Engineering

Argon gas flows through a well-insulated nozzle at steady state. The temperature and velocity at the inlet are 570oR and 150 ft/s, respectively. At the exit, the temperature is 480oR and the pressure is 40 lbf/in2. The area of the exit is 0.0085 ft2. Use the ideal gas model with k = 1.67, and neglect potential energy effects. Determine the velocity at the exit, in ft/s, and the mass flow rate, in lb/s.

Answer Answers (1)