Explanation

Full wave rectification is given by four diodes connected in bridge type arrangement.

This configuration allows both halves of the A.C. waveform to be used, producing a smoother and more efficient output compared to half-wave rectification.

Explanation

The component of electronics that acts as a rectifier is a diode.

Diodes allow current to flow in one direction only.

It enabling the conversion of alternating current (A.C.) into direct current (D.C.) by blocking the reverse flow.

Explanation

In an ideal transformer, power input is equal to power output.

This is based on the principle of conservation of energy.

It means that the transformer is assumed to have no losses; therefore, the input power (from the primary coil) equals the output power (to the secondary coil).

Explanation

The incorrect statement is "Distance between consecutive nodes is 1 wavelength."

The distance between consecutive nodes is actually 1/2 wavelength, as nodes are points of no displacement in standing waves.

It occurring at intervals of half the wavelength along the string.

Explanation

Explanation

The centripetal force (F) acting on the roller coaster is given by the formula:

F = (m × v^2) / r

Where:

m = net mass of coaster + passengers

v = velocity = 30 m/s

r = radius of the circular track = 30 m

Substituting the values, we get:

F = (m × (30)^2) / 30

= (m × 900) / 30

= 900m / 30

= 900m

So, the centripetal force acting on the roller coaster is 900m.

Explanation

When the velocity increases by 2 times and the radius increases by 4 times, the centripetal force remains the same.

This is because the increase in velocity squared (2^2 = 4) is balanced by the increase in radius (4r), resulting in no net change in the centripetal force.

So, the correct answer is:

F' = F

Explanation

Angular velocity (ω) is defined as the rate of change of angular displacement (θ) with respect to time (t). It can be calculated using the formula:

ω = v / r

Where:

v = linear velocity (in m/s)

r = radius of the circle (in m)

Given:

v = 250 m/s (linear velocity)

r = 100 m (radius of the circle)

ω = v / r

= 250 m/s / 100 m

= 2.5 rad/s

So, the angular velocity of the aircraft is 2.5 rad/sec.

Explanation

Given:

Force (weight) = 2.0 N

Distance = 100 cm = 1 m

Time = 4 s

Formula:

Power = Work ÷ Time

Work = Force × Distance = 2 × 1 = 2 J

Power = 2 ÷ 4 = 0.5 W

Additional information:

• Power (P) is defined as the rate at which work is done or energy is transferred.
• The formula to calculate power is:
• P = W / t
• Where:
• W = work done (in Joules)
• t = time (in seconds)

Explanation

The formula to calculate work (W) is:

W = F × d

Where:

F = force (in Newtons)

d = displacement (in meters)

Given:

F = 1 N (force)

d = 1 m (displacement)

W = 1 N × 1 m = 1 J

So, the work done is 1 Joule.