Question 31 : Commutation process of a DC motor can be accomplished by solid devices (transistors and SCR's).
1. True
2. False
3.
4.
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Question 32 : Which of the following phase switching sequence represents half-step operation of a VR stepper motor ?
1. A, B, C,A……..
2. A, C, B,A…….
3. AB, BC, CA, AB……..
4. A, AB, B, BC……..
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Question 33 : High torque/inertia ratio means:
1. Stalled torque
2. Stalled inertia
3. Stalled toque/inertia ratio
4. Lower motor time constant
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Question 34 : A one-way valve that lets air into the reservoir of a compressor, but doesn't let it out, is a
1. Check valve
2. Receiver valve
3. Control valve
4. Three way valve
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Question 35 : The ____________________ converts the compressed air energy into mechanical energy in the form of linear movement in one direction only.
1. Piston cylinders
2. Double acting cylinders
3. Single acting cylinders
4. Hydraulic pumps
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Question 36 : Which of the motions in actuators are preferred:
1. Translator
2. Rotary
3. Stationary
4. Non-Stationary
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Question 37 : The major components of a controller are:
1. Control element
2. Error detector and control element
3. Feedback element
4. Error detector and feedback element
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Question 38 : A non-linear element can be treated as the linear element.
1. True
2. False
3.
4.
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Question 39 : A stepping motor is a ____________ device.
1. Mechanical
2. Electrical
3. Analogue
4. Incremental
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Question 40 : Different type of construction in permanent type DC magnet are :
1. Slotted armature type
2. Surface wound armature type
3. Surface wound rotating armature, stationary wound type.
4. All of the mentioned
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