66 Best Machine Questions and Answers (Q&A) - ProProfs Discuss

What are the cycles of function of the M249?

Vinlandmike
Answered: Apr 24, 2024

Feeding, chambering, locking, firing, unlocking, extracting, ejecting, cocking

1 Answer

288 views

What happens to the core loss when input frequency increases in a transformer operating at constant voltage?

John Adney
Answered: Mar 05, 2017

Core loss is mainly due to hysteresis and eddy current losses which dependonly on frequency and the other constants are material property thus with anincrease in frequency core loss should...Read More

2 Answers

287 views

How many types of safety valves are used to protect vessels and heat exchangers?

K. Shadrach
Answered: Nov 14, 2019

There are two main types of safety valves that are available, but when it comes to the specific ones, there are so man that can be considered. There are different applications that are required,...Read More

1 Answer

280 views

What causes polyuria in diabetes mellitus?

John Smith
Answered: Apr 24, 2024

The direction of instantaneous torque on the rotor reverses after each half cycle.

1 Answer

272 views

Why is the automatic expansion valve(AEV) used?

Wyatt Williams
Answered: Apr 24, 2024

On water type evaporator, freezing will not occur

1 Answer

267 views

What is the maximum quantity in LBS that you may legally store according to NYC Fire Law Handbook?

Sila
Answered: Apr 24, 2024

200 pounds

1 Answer

256 views

What is the difference between Singular Value Decomposition (SVD) and Principal Component Analysis (PCA)?

E.Emily
Answered: Nov 10, 2020

In the analysis of abstract mathematics, such as linear algebra, singular value decomposition is required in the matrix breakdown of a real or complex matrix. Singular value decomposition is...Read More

4 Answers

155 views

What is the difference between PVC and SVC?

S. Leo, Content Blogger
Answered: Jul 21, 2020

PVC or Permanent Virtual Circuit and SVC or Switched Virtual Circuits are two virtual circuits used in networks like X.25 and Frame Relay. One of the major differences between PVC and SVC is how...Read More

4 Answers

140 views

What is the difference between Knitting and Weaving?

K. Shadrach
Answered: Jun 24, 2020

Knitting can be defined as the process in which thread is used in forming or making cloth as well as other crafts. Yarn is used sometimes instead of thread. It consists of the consecutive running...Read More

2 Answers

103 views

How to thread a sewing machine?

G. Tanaka, Dentist
Answered: Sep 03, 2020

There are three major sections in threading a sewing machine.
1. Winding the bobbin: place your thread spool in such a way that the spool pin on the machine is inserted into it. Pull...Read More

1 Answer

56 views

How to make use of sewing machine properly?

G. GRAY, Writer
Answered: Sep 10, 2020

Locating and knowing the functions of each part of your sewing machine will help you to know how to make use of it properly. 1. Start by locating the power switch, thread guide, spool pin,...Read More

3 Answers

41 views

What is the difference between Jig and Fixture?

Christian Jackson, Content Developer
Answered: Apr 08, 2020

A jig is known to be a device that can be used to control other work cutting tools. The jig will make sure that the objects are arranged in their proper positions so that the work can take place...Read More

1 Answer

38 views

What is the difference between SCADA and HMI?

Christian Jackson, Content Developer
Answered: Mar 27, 2020

SCADA stands for supervisory monitoring and control in an organization, and HMI stands for the Human Machine Interface. SCADA has applications in manufacturing, production, refining, and power...Read More

1 Answer

35 views

Why is my air conditioning unit making a weird buzzing noise?

Faith G. Stackhouse
Answered: Oct 12, 2020

Every homeowner wants to have an air conditioning system that runs smoothly and without much noise. If you’ve been noticing that your units have been making buzzing noises that you know to...Read More

1 Answer

28 views

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