This document contains an internal objective test for mechanical engineering students. It has 20 multiple choice and fill in the blank questions testing knowledge of various non-conventional machining processes including waterjet machining (WJM), abrasive jet machining (AJM), electrochemical machining (ECM), and ultrasonic machining (USM). The test covers topics like operating parameters, tool materials, and process characteristics for each technique. It is the first internal objective test of the semester, worth a total of 10 marks.

1. CMR INSTITUTE OF TECHNOLOGY
Kandlakoya (V), Medchal Road, Hyderabad-501401.
INTERNAL OBJECTIVE TEST-I.
Course: B.Tech IV-II SEM Branch : Mechanical
Subject : UCMP Duaration : 20 min
Date : 10/02/2020 Max. Marks : 10
Note: 1. Answer all Questions
2. All questions carry equal marks.
I. Multiple choice questions.
1.What is the pressure used for pumping of water in WJM.
a. 10-20 KN/m2 b. 100-200 KN/m2
c. 1000-4000KN/m2 d. 10000-40000 KN/m2 ( )
2. How many types of nozzles are there for AWJM.
a. 1 b. 2
c. 3 d. 4 ( )
3.What is the shape of the nozzle exit for AJM.
a. circular b. Rectangular
c. square d. circular and rectangular ( )
4. Which of the following can be cut by WJM.
a. soft materials b. hard materials
c. both a and b d. none ( )
5. What is the grit size of abrasive used in AJM.
a. 0.1-0.2 µm b. 1-2 µm
c. 10-20µm d. 100-200µm ( )
6. what do you mean by SOD in AJM.
a. side on distance b. simple oscillation distribution
c. standoff distance d. single optimum distance ( )
7. which parameter is basically needed for metal removal process in AJM.
a. grain size b. jet velocity c. SOD
d. all of the above e. none of the above ( )
8. What are the materials used as tools for ECM.
a. carbon b. boron
c. copper d. silver ( )
9. What is the material used for tool bit in USM.
a. titanium b. tungsten
c. WC d. Si ( )
10. Frequency used in USM is
a. 20Hz b. 2000Hz
c. 20000Hz d.2Hz ( )
II.Fill inthe Blanks.
11. In ECMwork piece isconnectedto____________________ terminal.
12. What isthe importance of gapbetweenthe electrodesinECM_____________________.
13. ECM processisthe Reverse of ______________________ process.
14.What are nimonics __________________________.
15. What are the otherprocessesusedin ECM. ______________________.
16. What isthe type of transducerusedinUSM __________________________.
17. LiquidmediausedinUSMfor slurryis _________________________.
18. Characteristicof carriergas in AJMis______________________.
19.Typesof wavesusedinUSM are ____________________ and __________________.
20.Material usedtofabricate hornin USM is____________________________.
SET 1

2. CMR INSTITUTE OF TECHNOLOGY
Kandlakoya (V), Medchal Road, Hyderabad-501401.
INTERNAL OBJECTIVE TEST-I.
Course: B.Tech IV-II SEM Branch : Mechanical
Subject : UCMP Duaration : 20 min
Date : 10/02/2020 Max. Marks : 10
Note: 1. Answer all Questions
2. All questions carry equal marks.
I. Multiple choice questions.
1. Which of the following can be cut by WJM.
a. soft materials b. hard materials
c. both a and b d. none ( )
2. What is the grit size of abrasive used in AJM.
a. 0.1-0.2 µm b. 1-2 µm
c. 10-20µm d. 100-200µm ( )
3. what do you mean by SOD in AJM.
a. side on distance b. simple oscillation distribution
c. standoff distance d. single optimum distance ( )
4. which parameter is basically needed for metal removal process in AJM.
a. grain size b. jet velocity c. SOD
d. all of the above e. none of the above ( )
5. What are the materials used as tools for ECM.
a. carbon b. boron
c. copper d. silver ( )
6. What is the material used for tool bit in USM.
a. titanium b. tungsten
c. WC d. Si ( )
7. Frequency used in USM is
a. 20Hz b. 2000Hz
c. 20000Hz d.2Hz ( )
8.What is the pressure used for pumping of water in WJM.
a. 10-20 KN/m2 b. 100-200 KN/m2
c. 1000-4000KN/m2 d. 10000-40000 KN/m2 ( )
9. How many types of nozzles are there for AWJM.
a. 1 b. 2
c. 3 d. 4 ( )
10.What is the shape of the nozzle exit for AJM.
a. circular b. Rectangular
c. square d. circular and rectangular ( )
II.Fill inthe Blanks.
11.What are nimonics ___________________________.
12. What are the otherprocessesusedinECM. ______________________.
13. What isthe type of transducerusedinUSM __________________________.
14. LiquidmediausedinUSMfor slurryis _________________________.
15. Characteristicof carriergas in AJMis______________________.
16.Typesof wavesusedinUSM are ____________________ and __________________.
17.Material usedtofabricate hornin USM is____________________________.
18. In ECMwork piece isconnectedto____________________ terminal.
19. What isthe importance of gapbetweenthe electrodesinECM_____________________.
20. ECM processisthe Reverse of ______________________ process.
SET 2

3. CMR INSTITUTE OF TECHNOLOGY
Kandlakoya (V), Medchal Road, Hyderabad-501401.
INTERNAL OBJECTIVE TEST-I.
Course: B.Tech IV-II SEM Branch : Mechanical
Subject : UCMP Duaration : 20 min
Date : 10/02/2020 Max. Marks : 10
Note: 1. Answer all Questions
2. All questions carry equal marks.
I. Multiple choice questions.
1. which parameter is basically needed for metal removal process in AJM.
a. grain size b. jet velocity c. SOD
d. all of the above e. none of the above ( )
2. What are the materials used as tools for ECM.
a. carbon b. boron
c. copper d. silver ( )
3. What is the material used for tool bit in USM.
a. titanium b. tungsten
c. WC d. Si ( )
4. Frequency used in USM is
a. 20Hz b. 2000Hz
c. 20000Hz d.2Hz ( )
5.What is the pressure used for pumping of water in WJM.
a. 10-20 KN/m2 b. 100-200 KN/m2
c. 1000-4000KN/m2 d. 10000-40000 KN/m2 ( )
6. How many types of nozzles are there for AWJM.
a. 1 b. 2
c. 3 d. 4 ( )
7.What is the shape of the nozzle exit for AJM.
a. circular b. Rectangular
c. square d. circular and rectangular ( )
8. Which of the following can be cut by WJM.
a. soft materials b. hard materials
c. both a and b d. none ( )
9. What is the grit size of abrasive used in AJM.
a. 0.1-0.2 µm b. 1-2 µm
c. 10-20µm d. 100-200µm ( )
10. what do you mean by SOD in AJM.
a. side on distance b. simple oscillation distribution
c. standoff distance d. single optimum distance ( )
II.Fill inthe Blanks.
11. LiquidmediausedinUSMfor slurryis _________________________.
12. Characteristicof carriergas in AJMis______________________.
13.Typesof wavesusedinUSM are ____________________ and __________________.
14.Material usedtofabricate hornin USM is____________________________.
15. In ECMwork piece isconnectedto____________________ terminal.
16. What isthe importance of gapbetweenthe electrodesinECM_____________________.
17. ECM processisthe Reverse of ______________________ process.
18.What are nimonics ___________________________.
19. What are the otherprocessesusedinECM. ______________________.
20. What isthe type of transducerusedinUSM __________________________.
SET 3

4. CMR INSTITUTE OF TECHNOLOGY
Kandlakoya (V), Medchal Road, Hyderabad-501401.
INTERNAL OBJECTIVE TEST-I.
Course: B.Tech IV-II SEM Branch : Mechanical
Subject : UCMP Duaration : 20 min
Date : 10/02/2020 Max. Marks : 10
Note: 1. Answer all Questions
2. All questions carry equal marks.
1. Frequency used in USM is
a. 20Hz b. 2000Hz
c. 20000Hz d.2Hz ( )
2.What is the pressure used for pumping of water in WJM.
a. 10-20 KN/m2 b. 100-200 KN/m2
c. 1000-4000KN/m2 d. 10000-40000 KN/m2 ( )
3. How many types of nozzles are there for AWJM.
a. 1 b. 2
c. 3 d. 4 ( )
4.What is the shape of the nozzle exit for AJM.
a. circular b. Rectangular
c. square d. circular and rectangular ( )
5. Which of the following can be cut by WJM.
a. soft materials b. hard materials
c. both a and b d. none ( )
6. What is the grit size of abrasive used in AJM.
a. 0.1-0.2 µm b. 1-2 µm
c. 10-20µm d. 100-200µm ( )
7. what do you mean by SOD in AJM.
a. side on distance b. simple oscillation distribution
c. standoff distance d. single optimum distance ( )
8. which parameter is basically needed for metal removal process in AJM.
a. grain size b. jet velocity c. SOD
d. all of the above e. none of the above ( )
9. What are the materials used as tools for ECM.
a. carbon b. boron
c. copper d. silver ( )
10. What is the material used for tool bit in USM.
a. titanium b. tungsten
c. WC d. Si ( )
II.Fill inthe Blanks.
11.Material usedtofabricate hornin USM is____________________________.
12. In ECMwork piece isconnectedto____________________ terminal.
13. What isthe importance of gapbetweenthe electrodesinECM_____________________.
14. ECM processisthe Reverse of ______________________ process.
15.What are nimonics __________________________.
16. What are the otherprocessesusedinECM. ______________________.
27. What isthe type of transducerusedinUSM __________________________.
18. LiquidmediausedinUSMfor slurryis _________________________.
19. Characteristicof carriergas in AJMis______________________.
20.Typesof wavesusedinUSM are ____________________ and __________________.
SET 4

5. Keyfor SET 1
I. Multiple choice
1.c
2.b
3.d
4.a
5.d
6.c
7.d
8.c
9.c
10.c
II.Fill inthe Blanks
11.Anode
12.gap decidesthe metal removal rate (MRR)
13.Electroplating
14. alloyof nickel andchromium
15. ECG, ECDB, ECH
16.Magnetostrictive
17.water
18. Inert
19. longitudinal andshearwaves
20.Titanium