EE 5

A golf ball is struck by a golf club and falls on green three meters above the tee. The potential energy on the Earth-ball system is greatest _________.

• When the ball reaches the highest point in its flight

• Just before the ball is struck

• When the ball comes to rest on the green

• Just after the ball is struck

GMC was created by the Energy Regulatory Commission to monitor the compliance of the users of the Grid to the PGC. What does GMC stand for?

• Generator Management Committee

• Grid Market Commission

• Generation Management Corporation

• Grid Management Committee

Which of the following has the greatest effect in decreasing the oscillation frequency of an LC circuit? Using instead _______.

• L/2 and 2C

• 2L and 2C

• 2L and C/2

• L/2 and C/2

In a capacitor the electric charge is stored in:

• Dielectric as well as metal plates

• Metal plates

• Neither dielectric nor metal plates

• Dielectric

In a SCR circuit, the angle of conduction can be changed by changing:

• anode current

• anode voltage

• gate current

• forward current rating

Static VAR compensators are used to control:

• only magnitude of the ac line current from the utility

• both magnitude and phase of the ac line current from the utility

• only the phase of the ac line current from the utility

• none of the choices

In a DC transmission line:

• Power transfer capability is limited by stability considerations.

• There are no effects due to inductive and capacitive reactance's.

• It is necessary for the sending end and receiving end to be operated in synchronism.

• The effect of inductive and capacitive reactance's are greater than in an AC transmission line of the same rating.

The effective resistance of conductor is increased by:

• Both skin effect and proximity effect.

• proximity effect

• skin effect

• corona effect

The value of the resistor creating thermal noise is doubled. The noise power generated is therefore:

• Quadrupled

• Unchanged

• Halved

• Double

What is the rms value of an AC current?

• The steady current that produces the same rate of heating in a resistor as the actual current.

• That steady current that will charge a battery at the same rate of the actual current.

• Its average value.

• Its peak value.