ELEX Pre-Board Exam 4

How much current does an electrostatic voltmeter require through it to operate?

• Zero current
• Below one ampere
• One ampere
• Very high current

Determine the equivalent work of 166 watt – second

• 166 Joules
• 100 Joules
• 16.6 Joules
• 10 Joules

Characteristics of the current flow in a series R-L-C circuit at resonance

• it is dc
• it is at a minimum
• it is zero
• it is at a maximum

What is the value of a resistor with colours from left. Orange, blue, gold and silver?

• 34 ohms +/- 10%
• 3.6 ohms +/- 10%
• 3.4 ohms +/- 10%
• 36 ohms +/- 10%

Which of the following characterizes inductance?

• tends to oppose dc
• tends to oppose changes in voltage
• tends to oppose changes in current
• oppose all frequencies equally

One of the following does not refer to the internal component of a klystron oscillator

• a collector plate
• a pair of plates
• a pair of catcher grids
• a pair of buncher grids

How can electrical current be inducted with a coil and a magnet?

• holding the coil and the magnet perfectly stationary
• moving either the magnet or the coil
• placing the coil parallel to the magnetic field
• placing the coil at right angles with the magnetic field

Which of the following integrated circuit contains the most gates?

• LSI
• MSI
• VLSI
• SSI

Which of the following is not primary type cell?

• Zinc chloride
• Silver zinc
• Silver oxide
• Carbon zinc

A Transformer consist of the following

• an inductance and resistance
• a parallel resonant circuit
• a capacitor and inductor
• two coils wound on a common core