LAP Mathe 1

LAP Mathe 1

Professional Development

10 Qs

quiz-placeholder

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LAP Mathe 1

LAP Mathe 1

Assessment

Quiz

Mathematics

Professional Development

Medium

Created by

Horst Ortmann

Used 1+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wie groß ist der Gesamtwiderstand eines 30 m langen Kupferkabels mit 0,75 mm² Querschnitt? (ρ = 0,0178 Ω·mm²/m)

0,38 Ω
0,56 Ω
1,3 Ω
0,712 Ω

Answer explanation

R = (ρ * l) / A = (0,0178 * 30) / 0,75 ≈ 0,712 Ω

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ein Verbraucher benötigt 5 A Strom. Wie groß ist der Spannungsabfall bei 0,712 Ω Leitungswiderstand?

3,56 V
3,1 V
5 V
2,6 V

Answer explanation

U = R * I = 0,712 Ω * 5 A ≈ 3,56 V

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wie viel Leistung benötigt ein Switch mit 0,2 A bei 12 V?

1,8 W
2,4 W
4,5 W
3,9 W

Answer explanation

P = U * I = 12 V * 0,2 A = 2,4 W

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wie viel Energie verbraucht eine Festplatte mit 0,5 A bei 5 V in 2 Stunden?

2,5 Wh
3,75 Wh
5 Wh
10 Wh

Answer explanation

P = 5 V * 0,5 A = 2,5 W → E = 2,5 W * 2 h = 5 Wh

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wie lange dauert ein 500 MB Download ungefähr bei 20 Mbit/s effektiver Datenrate?

125 s
250 s
200 s
300 s

Answer explanation

500 MB = 4000 Mbit → t = 4000 / 20 = 200 s

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Drei Widerstände (100 Ω, 220 Ω, 330 Ω) in Reihe – Gesamtwiderstand?

550 Ω
650 Ω
720 Ω
690 Ω

Answer explanation

R = 100 + 220 + 330 = 650 Ω

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Wie viele Hosts sind in einem /28-Subnetz maximal möglich?

16
30
32
14

Answer explanation

2^(32-28) - 2 = 14 Hosts

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