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Electrical Engineer (Qatar Exam) Test-9

20 Questions - Developed by: - Developed on: 2022-05-18 - 423 taken

Qatar engineering registration exam preparation

1

A digital signal needs to be modulated and transmitted. If we need to transmit 4 bits, what is the maximum number of ways it can be transmitted?

4
8
16
2

2

When using Zener Diode in regulator circuits, the output shape will be affected by:

Zener Voltage
Dynamic resistance of the diode
Input current passing through the diod

3

The motor used in travelling crane is:

Slip Ring AC Induction Motor
AC Split Motor
DC Differentially Compound Motor
Ward Leonard Controlled DC Shunt Motor

4

Which of the transmission voltage is not applied in Qatar Electrical Specifications?

400kV
220kV
66kV
132kV

5

An important step in the software lifecycle is testing. One type of testing is integration testing. Which of the following is not true concerning integration test?

Integration testing is employed to integrate separately tested pieces.
In integration testing, either a top-down or a bottom-up approach is selected to complete the test.
In a top-down integration test, testing begins at the top levels to see whether the overall logical design works and the interfaces between modules are correct.

6

The forward pass in project network calculation determines the:

Duration of the project
Earliest time’s activities can be finished
Earliest time’s activities can begin
All are correct

7

The single-phase motor generally used with household ceiling fans is:

None of the above
Permanent Capacitor type
Capacitor start type
Split phase type

8

All of the following are properties of fuses rather than circuit breakers, with one exception, which item is the property of circuit breakers?

Adjustable time-current characteristics
Simplify
Low initial costs
Longer downtime over operation

9

A phase, 3-wire ungrounded, 13.2kV (phase-to-phase) wye-connected source is connected to a balanced delta load that is grounded on corner A. The voltage measured between Corner Band ground is most nearly:

13.2 kV
Cannot be determined
Half the Phase-to-phase voltage
7.62 kV

10

The only load on a 3-phase, 4-wire system is placed between phase B and phase C. The phase-to-phase voltage is 13.2kV. The load is 500 kVA at 0.85 lagging power factor. The magnitude of the line current (ampere) in phase C is most nearly:

32.2
65.6
55.8
37.9

11

Which one is the harmonic source in the following list?

Variable impedance loads
Saturable magnetic loads
All of the above
Power electronic based loads

12

A low-pass filter is used to:

Pass a band of frequencies
Stop high frequencies
Stop a band of frequencies
Stop low frequencies

13

3-phase, 60-Hz induction motor has a nameplate speed of 1600 rpm. This motor has how many poles:

6.0
8.0
4.0
2.0

14

Which of the following is a name for a set of indices and values?

Queue
Array
FIFO
Stack

15

Your boss has just approved the initiation of a project to celebrate Qatar National Day. Sadia has been assigned the project manager as should be:

Make a report on required cost for the project
Work on the project scope
Establish the reporting process to the boss
Ask the boss as to how many team members would be allowed in the project

16

The spinning reserve is the:

None of the above
Generating capacity under maintenance
Generating capacity that is connected to the grid and ready to take the load
Generating capacity that is available for service but not in operation

17

Two resistances R1 and R2 give combined resistance of 4.5 ohms when in series and 1 ohm when in parallel. The resistances are:

1.5 ohms and 0.5 ohms
3 ohms and 6 ohms
1.5 ohms and 3 ohms
3 ohms and 9 ohms

18

Terminal represents control input of BJT:

Collector
Emitter
Base

19

An activity in a project network can be represented by which of the following?

Line
All of the above
Node
Arrow

20

What is analysis technique to determine effect of multi-sources?

Superposition
Kirchhoff Law
Shannon Law
Miller Law

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