COMPRESSORS, GAS TURBINES AND JET ENGINES QUIZ

Which one of the following statements best applies to a parallel RLC circuit?

The sum of the current is always less than the applied current

None of these

All of these

The current waveform for each component always has the same amplitude and phase as the applied current

The voltage waveform for each component always has the same amplitude and phase as the applied voltage

TRUE ANSWER : ?
YOUR ANSWER : ?

The direction of conventional current flow is:

from positive to negative

from negative to positive

from neutral to positive

None of these

from left to right

TRUE ANSWER : ?
YOUR ANSWER : ?

Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode

10 mA

12 mA

None of these

14 mA

11 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

If the base supply voltage increases, the Q point moves

off the load line

None of these

down

nowhere

up

TRUE ANSWER : ?
YOUR ANSWER : ?

A transistor has how many doped regions?

4

3

None of these

1

2

TRUE ANSWER : ?
YOUR ANSWER : ?

An audio transformer has a turn ratio of 9, What is its impedance ratio?

9

None of these

85

81

6

TRUE ANSWER : ?
YOUR ANSWER : ?

An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?

Valence electrons

None of these

Free electrons

Thermal energy

Doping

TRUE ANSWER : ?
YOUR ANSWER : ?

The nucleus of the copper atom contains how many protons?

18

None of these

29

4

1

TRUE ANSWER : ?
YOUR ANSWER : ?

The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:

rotor

None of these

armature

battery

commutator

TRUE ANSWER : ?
YOUR ANSWER : ?

Most AC power is obtained from:

generators

oscillators

lightning

None of these

batteries

TRUE ANSWER : ?
YOUR ANSWER : ?