What are the disadvantages of a commutator? The disadvantages of commutators are high consumption of electrical-grade copper, sparking, and wear caused by brush friction. What is the use of commutator? On DC and most AC motors the purpose of the commutator is to insure that the current flowing through the rotor windings is always in […]
What is the modulus of resilience?
What is the modulus of resilience? The modulus of resilience is defined as the maximum energy that can be absorbed per unit volume without creating a permanent distortion. It can be calculated by integrating the stress–strain curve from zero to the elastic limit. What is the relation between elasticity and modulus of resilience? While the […]
Why does having peers in the car while on your p1 Licence increase the risk of a crash?
Why does having peers in the car while on your p1 Licence increase the risk of a crash? Younger drivers having passengers in the vehicle is a distraction and coupled with peer pressure can increase the risk of a crash. Any lapse in concentration increases the risk of your vehicle being involved in a crash. […]
How do you calculate the number of active coils in a spring?
How do you calculate the number of active coils in a spring? Extension Spring Active Coils Extension spring’s coils are all active. The way to determine the total amount of active coils your spring has is to divide the body length (length of spring without the hooks), divide it by the wire diameter, and subtract […]
When should an alignment be done on a car?
When should an alignment be done on a car? For most cars, there are no specific requirements. Your mechanic would typically recommend doing the wheel alignment every two-three years or if there are signs that the alignment is off. Often, the wheel alignment is recommended when new tires are installed. What causes a car to […]
Where documented safe switching procedures are established and maintained and the installation is monitored by?
Where documented safe switching procedures are established and maintained and the installation is monitored by? Where documented safe switching procedures are established and maintained. But it must be monitored by qualified persons (see Art. 100). Where the positive polarity of a DC system does not serve as the connection for the grounded conductor which color […]
Is Eurostar a high speed train?
Is Eurostar a high speed train? Our trains can reach a maximum speed of 300 kilometres per hour (that’s 186 miles per hour) on the high speed lines in the UK, France and Belgium. Throughout the Channel Tunnel, Eurostar trains travel at a speed of 160 Kilometres per hour (100 mph). Does the Eurostar go […]
How does increasing the prong angle affect the launch angle and initial speed of the projectile?
How does increasing the prong angle affect the launch angle and initial speed of the projectile? 48.41 m/s As the prong angle increases, the launch angle decreases and the initial speed is varied. What is the initial angle of the launch? Key terms Term Meaning Launch angle The angle of a projectile’s initial velocity when […]
What is squeeze braking?
What is squeeze braking? Braking without ABS. To squeeze brake, keep your heel on the floor and use your toes to apply pressure on the brake pedal. If the wheels lock, ease off the brake pedal to a point just before they lock. Adjust pedal pressure as necessary. This gives you the best combination of […]
Which type of chart is used for project management?
Which type of chart is used for project management? Gantt charts What is Microsoft project management tool? Microsoft Project is a project management software product, developed and sold by Microsoft. It is designed to assist a project manager in developing a schedule, assigning resources to tasks, tracking progress, managing the budget, and analyzing workloads. How […]