GATE 2019: Manufacturing Quiz 10 (App update required to attempt this test)

Attempt now to get your rank among 1679 students!

Question 1

The media for energy transfer from tool to the work-piece in case of Ultrasonic machining is?

• AHot gases
• BElectrons
• CHigh velocity particles
• DElectrolyte

Question 2

Lesser heat affected zones around the surfaces that have been machined can be found in ___________.

• AElectrochemical machining
• BAbrasive Jet machining
• CUltrasonic machining
• DLaser beam machining

Question 3

While removing material from iron surface (atomic weight = 56, valency = 2 and density = 7.8 g/cm³) that is 40 mm × 40 mm in cross-section by electrochemical machining, a metal removal rate of 4 cm³/min is desired. The supply voltage is 12 V DC. The specific resistance of electrolyte is The gap between tool and workpiece is 0.25 mm. The overvoltage (extra - voltage in Volts) required for ion transfer is

Answer

Question 4

A 125 mm long, 10 mm diameter stainless steel rod is being turned to 9 mm diameter, 0.5 mm depth of cut. The spindle rotates at 360 r.p.m. With the tool traversing at an axial speed of 175 mm/min, the metal removal rate is nearly

• A2200 mm³/min
• B2400 mm³/min
• C2600 mm³/min
• D2800 mm³/min

Question 5

Consider the following statements
Cast iron is difficult to weld, because of
1. Low ductility
2. Poor fusion
3. Tendency to crack on cooling
Which of these statements are correct?

• A1, 2 and 3
• B1 and 2 only
• C2 and 3 only
• D1 and 3 only

Question 6

Match List-I (Tool) with List-II (Element of Tool) and select the correct answer using the codes given below the lists:

• AA-2, B-5, C-1, D-3
• BA-1, B-3, C-4, D-5
• CA-2, B-3, C-1, D-5
• DA-1, B-5, C-4, D-3

• 1679 attempts
• 2 upvotes
• 8 comments