Question: Most common form of A.C. meters met with in every day domestic and industrial installations are______________?

• 1. mercury motor meters
• 2. commutator motor meters
• 3. induction type single phase energy meters
• 4. all of the above

Question: An induction meter can handle current up to_____________?

• 1. 10 A
• 2. 30 A
• 3. 60 A
• 4. 100 A

Question: __________ instruments are those which measure the total quantity of electricity delivered in a particular time ?

• 1. Absolute
• 2. Indicating
• 3. Recording
• 4. Integrating

Question: Resistances can be measured with the help of_______________?

• 1. wattmeters
• 2. voltmeters
• 3. ammeters
• 4. ohmmeters and resistance bridges

Question: The use of _________ instruments is merely confined within laboratories as standardizing instruments?

• 1. absolute
• 2. indicating
• 3. recording
• 4. integrating

Question: Which of the following are integrating instruments ?

• 1. Ammeters
• 2. Voltmeters
• 3. Wattmeters
• 4. Ampere-hour and watt-hour meters

Question: The spring material used in a spring control device should have the following property?

• 1. Should be non-magnetic
• 2. Most be of low temperature co-efficient
• 3. Should have low specific resistance
• 4. All of the above

Question: A moving-coil permanent-magnet instrument can be used as ____________by using a low resistance shunt?

• 1. ammeter
• 2. voltmeter
• 3. flux-meter
• 4. ballistic galvanometer

Question: Which of the following essential features is possessed by an indicating instrument?

• 1. Deflecting device
• 2. Controlling device
• 3. Damping device
• 4. All of the above

Question: Which of the following devices may be used for extending the range of instruments ?

• 1. Shunts
• 2. Multipliers
• 3. Current transformers
• 4. All of the above