Does a helix have constant curvature? A helix has constant non-zero curvature and torsion. What is the equation of a helix? it is traced on the hyperbolic cylinder , as well as the surface , which is a surface of revolution when a = b. Curve studied by Catalan in 1878. The catenary helix is […]
What safety precautions must be observed when measuring resistance?
What safety precautions must be observed when measuring resistance? Measuring Resistance Before proceeding, you should be aware of the following important safety precaution that must be observed when using the ohmmeter function of a VOM: CAUTION Never connect an ohmmeter to a “hot” (energized) circuit. Be sure that no power is applied and that all […]
How do you calculate the value of an inductor?
How do you calculate the value of an inductor? Use the formula L = V*Ton/Ipk to calculate the inductance. All of the numbers needed should be right there on the oscilloscope. V stands for the voltage delivered by the pulses, Ton stands for the time between each pulse, and lpk means the peak current you […]
Which metal has the lowest melting point?
Which metal has the lowest melting point? Gallium Which metal is yellow in Colour? Gold Which group has lowest melting point? The chemical element with the lowest melting point is Helium and the element with the highest melting point is Carbon. At what heat does gold melt? 1,064 °C Does melting gold purify it? Does melting […]
How do electric motors use magnetic force to produce motion?
How do electric motors use magnetic force to produce motion? Which is an important step in how an electric motor uses magnetic force to produce motion? The armature rotates the axle in the magnetic field of a permanent magnet, which induces an electric current. The axle rotates the armature in the magnetic field of an […]
How does McLeod gauge work?
How does McLeod gauge work? McLeod gauges operate by taking in a sample volume of gas from a vacuum chamber, then compressing it by tilting and infilling with mercury. If a fine platinum wire is in the capillary tube, its resistance indicates the height of the mercury column around it. What is the measurement for […]
Which US city is nicknamed the Mile High City because of its height above sea level?
Which US city is nicknamed the Mile High City because of its height above sea level? Denver Is Denver at a higher altitude? Denver is situated at a high altitude of 5,280 feet (one mile high) above sea level. Visitors from lower elevations often underestimate the effects of altitude on their health and physical abilities. […]
How do you find the final temperature of a water mixture?
Which of the following is a valid reason why females are underrepresented in STEM jobs?
Which of the following is a valid reason why females are underrepresented in STEM jobs? Which of the following is a valid reason why females are underrepresented in STEM jobs? Females are not as competent as males in mathematics, science, and technology. 3. Females like technology and science, but they are not confident in their […]
What is the capacity of an AA alkaline battery?
What is the capacity of an AA alkaline battery? 2,500 mAh How is AA battery capacity measured? How to Test AA Batteries With a Voltmeter Consider how much power the device needs to function. AA batteries are supposed to deliver 1.5 volts. Set your meter to DC to measure batteries. Voltmeters measure both AC and […]