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Electrical Engineer (Qatar Exam) Test-7

20 Questions - Developed by: - Developed on: 2022-05-18 - 710 taken - 2 people like it

Qatar engineering registration exam preparation

1

The power factor of an alternator depends on:

Load connected to the machine
Armature losses to the machine
Core losses in the machine
Speed of the rotor

2

Fluorescent light flickers due to:

High voltage
Low Voltage
High frequency
Low frequency

3

Which of the following can represent an activity on a project network?

An arrow
A line
A node
An arrow and A node

4

A cyclic redundancy check (CRC) generator is based on what operation?

Modulo 2 Division
Bit wise add with carry
Two’s complement addition
Exclusive OR

5

First step of scope planning starts with:

Objective and requirements to satisfy customer
Budgeting
Current earning estimations

6

The term Fast Track means:

Construction starts before the design is complete
Cost plus fixed free
Design/Build
None of these above

7

Output of Cascade amplifier is:

Output of the first stage
Output of the stage before last stage
Output of the last stage

8

Incandescent lamp will work normally with best efficiency at the power factor is:

0.5 leading
0.8 leading
Unity
0.5 lagging

9

HRC Fuse means High Rupturing Capacity?

False
Not a sentence
True

10

System means group of elements making a function?

True
False
Not a sentence

11

A certain communication channel has a signal to noise ratio of 7 and a bandwidth of 10kHz. What is the channel capacity?

300 bps
80 bps
30000 bps
30 bps

12

Software maintenance activities can be classified into several maintenance types. Which of the following is not a software maintenance type?

Adaptive maintenance
Perfect maintenance
Corrective maintenance
Customer-initiated maintenance

13

An industrial plant is served by a 12470-v delta/480-v grounded-wye transformer. The high voltage side of the transformer is served from a 12470-v wye-connected distribution line that has a grounded neutral. The best protection of the transformer against lightning strikes on the 12470-v line will result from surge arrester connection of:

Phase to ground on the 480-v side of the transformer
Phase to neutral to ground on the 480-v side of the transformer
Phase to ground on the 12470-v side of the transformer
Phase to phase on the 12470-v side of the transformer

14

The primary difference between a programmable logic array designated 16R8 and one designated 20 R8 is that the 20 R8 has:

Four additional flip flops
20 pins rather than 16
Four additional input pins
Four additional in/out pins

15

What type of bond guarantees that if a contractor goes broke on a project, the surety will pay the necessary amount to complete the job?

Payment Bond
Performance bond
Acceptance bond
Bid bond

16

Which of the following junction nodes are forward biased?

Anode = +7V, Cathode = +10V
Anode = +0.3V, Cathode = +5V
Anode = +5V, Cathode = +3V

17

Which of the following best describes the sequential steps in an Object-Oriented design?

Define programming language, define class models, define design class diagrams, define collaboration diagram
Define classes, define interface techniques, define collaboration diagrams, define design diagrams
Define use case, define conceptual model, define collaboration diagrams, define design class

18

Increasing the current withdrawn from a battery has what effect on the battery capacity and why?

Decreased capacity, which is caused by increased polarization
Increased capacity, which is caused by less internal heat loss
Decreased capacity, which is caused by higher load voltage drop
Increased capacity, which is caused by lower internal resistance

19

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 500kVA at 0.85 lagging power factor. The magnitude of the line current (amperes) in phase C is most nearly:

37.9
65.6
32.2
55.8

20

A BJT is used to amplify in:

The active region
The ohmic region
The saturation region
The space charge region

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