Question 11 : Lower inertia is obtained due to much larger gap and hence stronger magnets are used for this purpose.
1. True
2. False
3.
4.
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Question 12 : Assertion (A): Electric actuators are used control system for high torque applications.
Reason (R): Due to linear speed-Torque characteristics.
1. Both A and R are true and R is correct explanation of A
2. Both A and R are true but R is not correct explanation of A
3. A is true but R is false
4. A is false but R is true
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Question 13 : Assertion (A): Slotted armature type in this armature is placed in slotted armature with DC windings placed inside the slots.
Reason (R): The construction is highly reliable and rugged but has high torque.
1. Both A and R are true and R is correct explanation of A
2. Both A and R are true but R is not correct explanation of A
3. A is true but R is false
4. A is false but R is true
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Question 14 : The lubricator in a pneumatic circuit is the:
1. First element in line
2. Second element in line
3. Last element in line
4. Third element in line
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Question 15 : A variable reluctance stepper motor is constructed of ______________ material with salient poles.
1. Paramagnetic
2. Ferromagnetic
3. Diamagnetic
4. Non-magnetic
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Question 16 : Electric actuators for stepped motion are known as stepper motor.
1. True
2. False
3.
4.
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Question 17 : Practically all the elements are:
1. Linear
2. Non-linear
3. Exponential
4. None of the mentioned
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Question 18 : In an automatic control system which of the following elements is not used?
1. Error detector
2. Final control element
3. Sensor
4. Oscillator
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Question 19 : Permanent magnets used for DC motors because of:
1. High residual flux density
2. High coercivity
3. Both a and b
4. Retentivity
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Question 20 : In a three-stack 12/8-pole VR motor, the rotor pole pitch is
1. 15º
2. 30º
3. 45º
4. 60º
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