Solar System - Mock Test 3

Question 21

A Ohmmeter is basically?

A) A ammeter B) A voltmeter C) A multimeter D) None of the above

---

No Details

Question 22

While testing cables the galvanometer used should be initially short-circuited in order to protect it from sudden initial inrush currents as the cable have ?

A) A low value of initial resistance B) A low value of initial capacitance C) A high value of initial capacitance D) Both a and b

---

No Details

Question 23

Which of the following instruments can be used for full scale deflection of 300o?

A) PMMC B) Induction type C) Hot wire D) Electrostatic

---

No Details

Question 24

The instrument having its deflection depends upon average value is?

A) Moving iron B) Hot wire C) Rectifier type D) Induction type

---

No Details

Question 25

Which of the following instruments have least torque/weight ratio?

A) Dynamometer type B) PMMC C) Attraction type moving iron D) Repulsion type moving iron

---

No Details

Question 26

Which of the following voltmeter have least power consumption?

A) Moving iron B) Hot-wire C) Electrostatic D) Induction type

---

No Details

Question 27

Measurement range of a voltmeter can be extended by using?

A) High current resistance B) High series resistance C) Low shunt resistance D) Low series resistance

---

No Details

Question 28

The instrument which is cheapest for dc measurement is?

A) Moving iron B) PMMC C) Hot-wire D) Electro-dynamo

---

No Details

Question 29

Electrostatic type instruments are mainly used for measurement of?

A) Heavy currents B) Low currents C) Low voltages D) High voltages

---

No Details

Question 30

A thermo-couple instrument can be used for the measurement of?

A) Direct current only B) Alternating current only C) Both direct current and alternating current D) dc/ac voltage only

---

No Details