Men,Sarimsaqov Zaynobiddin Asliddinovich (F. I. Sh) Qo`lda yoyli payvandlash fanidan 150 ta

137.Payvandlashda tok kuchi kanday tanalanadi?
A) Elektrod diametri va markasiga karab;
B) Elektrod markasiga karab;
C) Metall kalinligiga karab.
138.Uchma-uch payvandlashda kanday choklar ishlatiladi?
A) Birkatlamli va kupkatlamli;
B) Birkatlamli va xalkasimon;
C) Tugri chizikli va kupkatlamli.
139.Fazoviy щolatdagi choklarni aytib bering:
A) pastki, uchma-uch, kiya va ship;
B) pastki, gorizontal, burchak va ship;
C) pastki, gorizontal, vertikal va ship.
140.Kaysi xolatlarda elektrodni kundlang tebranma xarakatga keltiriladi?
A) Deformatsiyadan щoli bыlish uchun;
B) CHok ildizini yaxshilab payvandlashda;
C) Kengaytirilgan chok щosil kilish uchun.
141.Kaysi xolatlarda plastina kirralari tayyorlanadi?
A) 8 mm gacha kalinlikda;
B) 8 mm dan yukori kalinlikda;
C) 8 mm kalinlikda.
142.Metall kalinligi 30 mm bыlganda elektrod diametrini tanlang?
A) 6 mm;
B) 5 mm;
C) 4 mm.
143.Detallar orasidagi tirkish (zazor) kancha bыlishi kerak?
A) 0-2 mm;
B) 2-4 mm;
C) 4-6 mm.
144.Payvand birikmalar turlarini aytib bering?
A) ustma-ust, uchma-uch, burchak va tavrli;
B) ustma-ust, uchma-uch, burchak va xalkasimon;
C) kayiksimon, uchma-uch, burchak va tavrli;
D) ustma-ust, trubali, burchak va tavrli.
145. CHoklarning fazodagi xolatlarini aytib bering?
A) pastki, uchma-uch, vertikal va ship;
B) pastki, gorizontal, burchak va ship;
C) pastki, gorizontal, vertikal va ship;
D) ustma-ust, gorizontal, vertikal va ship.
146. 6 mm kalinlikdagi metall taxta uchun elektrod diametrini tanlang?
A) 4;
B) 5;
C) 3;
D) 8.
147. Diametri 5 mm li elektrod uchun tok kuchini belgilang?
A) 300-350 A;
B) 120-180 A;
C) 250-300 A;
D) 80-120 A.
148. 300 A tok kuchi uchun yoruglik filtrini tanglang?
A) S3;
B) S2;
C) S4;
D) S6.