MACHINIST 3rd SEM MCQ QUESTION ANSWER - 9
MACHINIST 3rd SEM ALL QUESTION ANSWER
121 Which machine converts electric energy into mechanical rotary motion?
A Motor
B Generator
C Transformer
D Solenoid
Correct Answer:- A Motor
122 Which component rotates in an electric generator?
A Field pole
B Brushes
C Frame
D Armature
Correct Answer:- D Armature
123 Which equipment converts mechanical energy to
electrical energy?
A D.C. motor
B Generator
C Transformer
D A.C. motor
Correct Answer:- B Generator
124 What is the general electrical symbol?
B Resistor
C Fuse
D Capacitor
Correct Answer:- C Fuse
125 Which accessary acts as switch and fuse?
A Isolater
B MCB
C Fuse
D Switch
Correct Answer:- B MCB
126 What is the purpose of LVDT?
A Measure current
B Measure temperature
C Measure voltage
D Measure displacement
Correct Answer:- D Measure displacement
127 What is relation or I,V,R according to the Ohm’s Law?
A I = V/R
B I = R/V
C I=I/VR
D I=RV/I
Correct Answer:- A I = V/R
128 What is the name of the device used to provide inductance in a circuit?
A Volt meter
B Ammeter
C Inductors
D Solenoid
Correct Answer:- C Inductors
129 Which electrical device detect the fault indication automatically?
A Relay
B Thermostat
C Intermediate switch
D Limit switch
Correct Answer:- A Relay
130 What is the name of device?
A MCB
B ELCB
C Relay
D Thermostat
Correct Answer:- A MCB
129 What is the expansion of LVDT in sensor?
A Linear Variable Differential Transformers
B Linear Various Differential Transformer
C Linear Variedly Differential Transformer
D Low Variable Differential Transformers
Correct Answer:- A Linear Variable Differential Transformers
130 What is the name of the electro mechanical device having insulated wire wound over a solid iron core?
A Motor
B Solenoid
C Transformer
D Inductor
Correct Answer:- B Solenoid
131 Which rule determines the direction of motion of the conductor in D.C. motor?
A Fleming's right hand rule
B Fleming's left hand rule
C Marewells right hand grip rule
D Cork's screw rule
Correct Answer:- B Fleming's left hand rule
132 Which law states the working principle of the generator?
A Lenz's law
B Ohm's law
C Faraday's law of electro magnetic induction
D Kirchhoff's law
Correct Answer:- C Faraday's law of electro magnetic induction
133 What is the component have the same physical dimensions of MCBs but cannot be used for automatic tripping?
A Fuse
B Isolator
C Starter
D Relay
Correct Answer:- B Isolator
134 Which is the technology used by photo electric sensors for sensing the target?
A Inductive
B Capactive
C Photo electric
D Ultra sonic
Correct Answer:- C Photo electric
135 Which is the quantity being measured by the strain gauge?
A Vibration
B Temperature
C Pressure
D Sound
Correct Answer:- C Pressure
136 What is the name of the device used for protecting a circuit against excess current?
A Fuse
B Switch
C Alarm
D Resistor
Correct Answer:- A Fuse
137 What is the letter symbol for inductance?
A L B I C F D P
Correct Answer:- A L
138 What is the sensing range of photo electric proximity sensor?
A 4mm - 40mm
B 3mm - 60mm
C 1mm - 60mm
D 3mm - 30mm
Correct Answer:- C 1mm - 60mm
139 Which is general safety in CNC turning?
A Do not use non standard tools /holders
Check the voltage and current
Check the chuck function
Check the programme control levels
Correct Answer:- A Do not use non standard tools /holders
140 What is the safety check on the CNC machine after start?
A Check the chuck function
B Check the voltage and current
C Check the hydraulic tank oil level
D Check the clamping stock
Correct Answer:- A Check the chuck function
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