1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VMariaS [17]
2 years ago
10

Advantage of a sheave wheel in a shaft headgear​

Engineering
1 answer:
NikAS [45]2 years ago
5 0

Answer:

sorry if wrong

Explanation:

One sheave means that you are using a single drum winder. They are the worst! Double drum winders control easier, brake better and are much more efficient. They save time ( two skips or cages) and can be clutched to perform faster shift transport. A single drum is slow, unbalanced and can be a nightmare if it trips out during hoisting. If the brake system is not perfect it can be a real hairy experience. For a runaway single drum, there is no counterbalance effect. It always runs to destruction. With a double drum, the driver still has a chance to control the winder to a certain extent and he has two sets of brakes to rely on. A single sheave could also mean a shaft with a single compartment. No second means of escape unless there are ladders or stairways. Not a very healthy situation.

Those are just a few points. I am sure much more can be said in favor of a double drum winder and two or more sheaves in the headgear. Most of the shafts I have worked at have multiple winders and up to ten compartments. They all have a small single drum service winder for emergencies and moves of personnel during shift times. They are referred to as the Mary - Annes. Apparently, the name originated in the U.K. where an aristocratic mine owner named the first such winder after his mistress.

You might be interested in
Impact strips may be designed into a bumper cover.<br> True<br> False
d1i1m1o1n [39]

Answer:

true I think

Explanation:

true I think

5 0
3 years ago
Which basic principle influences how all HVACR systems work?
bezimeni [28]

Answer:

B) An increase in pressure can lower the boiling point of a liquid and change the temperature at which it turns to a gas.

Explanation:

B) An increase in pressure can lower the boiling point of a liquid and change the temperature at which it turns to a gas.

6 0
3 years ago
Explain why Chloe's design needs to be redone in the following scenario, and recommend the techniques she needs to include in he
Alenkinab [10]

Answer:

She believes he's weak and won't do what needs to be done to become a king.

Explanation:

She says ('I fear thy nature') and calls him 'too full o' th' milk of human kindness' which reflects that she feels his kindness makes him weak and may prevent him from proceeding the plan. Thus, she manipulates him to keep his kindness aside and do what she wishes him to do. She rather belittles him to get her purpose solved and

7 0
2 years ago
Read 2 more answers
The cube measures 3.0-ft on all sides and has a density of 3.1 slugs/ft3. How much does it weigh?
kodGreya [7K]

Answer:

W = 2695.14 lb

Explanation:

given,

side of cube = 3 ft

density of the cube = 3.1 slugs/ft³

we know,

density = \dfrac{mass}{volume}

mass = density x volume

volume = 3³ = 27 ft³

mass =  3.1  x 27

    m = 83.7 slugs.

weight calculation

converting mass from slug to pound

weight of 1 slug is equal to 32.2 lb

now,

weight of the cube is equal to

  W = 83.7 slugs x 32.2 lb/slug

  W = 2695.14 lb

hence, weight is equal to W = 2695.14 lb

4 0
3 years ago
Should aircraft wings have infinite stiffness?
Colt1911 [192]

Answer:

No, they need to be somewhat flexible so that forces such as turbulance don't shear the wing off.

3 0
2 years ago
Read 2 more answers
Other questions:
  • Water flows through two smooth pipes with the same diameter and length as shown below. ipe is twice that through the first-pipe.
    12·1 answer
  • For a heat pump, COP&lt;1. a) True b) False
    11·1 answer
  • The Accenture team is involved in helping a client in the transformation journey using Cloud computing. How is myNav beneficial
    6·1 answer
  • An isothermal CSTR with a first order irreversible reaction A â&gt; B (and rA[mol/(ft3*min)] = - 0.5 CA) has a constant flow rat
    13·1 answer
  • Writing an excellent problem statement will not help guide you through the rest of the process and steer you towards the BEST so
    8·1 answer
  • 3. What is a caliber (relate it to rockets)
    14·1 answer
  • Which of the following best describes the basic purpose of the internet?
    7·2 answers
  • The use of seatbelts in a car has significantly reduced the number of crash fatalities. Which statement best explains how societ
    11·1 answer
  • The forklift exiting an aisle in a warehouse has the right of way?
    15·1 answer
  • An electrical layout is a drawing that indicates how the ________ of a circuit will be connected to one another and where the wi
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!