Grile 3 Modul 1 Electromec Constantinescu FMC&FMM 4&5.pdf
Electric Motor Quiz
Test your knowledge on electric motors and their various mechanisms in this engaging quiz! Whether you are a student, a teacher, or someone interested in electromecanical systems, this quiz covers the fundamentals and advanced concepts of asynchronous motors.
Get ready to challenge yourself with key topics, including:
- Types of electric motors
- Slip and operational regimes
- Coupling methods
1) Majoritatea motoarelor electrice de actionare a mecanismelor navale sunt de tipul:
A ) cu rotorul in scurtcircuit cu colivie normala;
B ) cu rotorul bobinat;
C ) cu bare inalte;
D ) cu colivii multiple.
2) Alunecarea masinii asincrone se defineste ca:
0%
0
A)
0%
0
B)
0%
0
C)
0%
0
D)
3) In regim de generator asincron,alunecarea masinii este;
A) s>_0
B) s<0
C) 0< s <_1
D) s > 0
4) In regim de motor ,alunecarea masinii asincrone este:
A) s<0
B) s>1
C) s>0
d) 0<s<_1
5) In regim de frana electromagnetica ,alunecarea masinii asincrone este:
A) s>0
b) 0<s<_1
C) s>1
D) s<0
6) .T.e.m. Indusa intr-o faza a infasurarii statorice a masinii asincrone este:
0%
0
A)
0%
0
B)
0%
0
C)
0%
0
D)
8) Alunecarea critica a unui motor asincron este:
0%
0
A)
0%
0
B)
0%
0
C)
0%
0
D)
9) Cuplul critic (maxim)al unui motor asincron este:
0%
0
A)
0%
0
B)
0%
0
C)
0%
0
D)
10) Modificarea in trepte a turatiei unui motor asincron,la o incarcare data se face prin:
A)modificarea tensiunii de alimentare cu ajutorul unui autotransformator;
B) prin introducerea unor rezistente de reglare in circuitul rotoric;
C) prin schimbarea numarului de poli ai infasurarii statorice;
D) prin modificarea frecventei tensiunii de alimentare.
11) Majoritatea motoarelor asincrone de actionare a mecanismelor navale se pornesc prin metoda:
A ) stea-triunghi;
B ) cu autotransformator de pornire;
C ) cu reostat de pornire;
D ) cuplare directa.
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