Explore topic-wise MCQs in Electrical Measurements.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Measurements knowledge and support exam preparation. Choose a topic below to get started.

1.

The function of the Q- Meter is to _________

A. Measure capacitance
B. Measure inductance
C. Measure quality factor of capacitor and inductor
D. Measure form factor of capacitor and inductor
Answer» D. Measure form factor of capacitor and inductor
Discussion
2.

Consider a circuit consisting of two capacitors C1 and C2. Let R be the resistance and L be the inductance which are connected in series. Let Q1 and Q2 be the quality factor for the two capacitors. While measuring the Q value by the Parallel Connection method, the value of the Q factor is?

A. Q = ( frac{(C_1 C_2 ) Q_1 Q_2}{Q_1 C_1 Q_2 C_2} )
B. Q = ( frac{(C_2 C_1 ) Q_1 Q_2}{Q_1 C_1 Q_2 C_2} )
C. Q = ( frac{(C_1 C_2 ) Q_1 Q_2}{Q_2 C_2 Q_1 C_1} )
D. Q = ( frac{(C_2 C_1 ) C_1 C_2}{Q_1 C_1 Q_2 C_2} )
Answer» C. Q = ( frac{(C_1 C_2 ) Q_1 Q_2}{Q_2 C_2 Q_1 C_1} )
Discussion
3.

Consider a circuit consisting of two capacitors C1 and C2. Let R be the resistance and L be the inductance which are connected in series. Let Q1 and Q2 be the quality factor for the two capacitors. While measuring the Q value by the Series Connection method, the value of the Q factor is?

A. Q = ( frac{(C_1 C_2 ) Q_1 Q_2}{Q_1 C_1 Q_2 C_2} )
B. Q = ( frac{(C_2 C_1 ) Q_1 Q_2}{Q_1 C_1 Q_2 C_2} )
C. Q = ( frac{(C_1 C_2 ) Q_1 Q_2}{Q_2 C_2 Q_1 C_1} )
D. Q = ( frac{(C_2 C_1 ) C_1 C_2}{Q_1 C_1 Q_2 C_2} )
Answer» B. Q = ( frac{(C_2 C_1 ) Q_1 Q_2}{Q_1 C_1 Q_2 C_2} )
Discussion
4.

Q factor of a coil measured by the Q Meter is _________ the actual Q of the coil.

A. Equal to
B. Same but somewhat lesser than
C. Same but somewhat higher than
D. Not equal to
Answer» C. Same but somewhat higher than
Discussion
5.

Q Meter is used to measure _________

A. Q factor of an inductive coil
B. Only the effective resistance
C. Only bandwidth
D. Q factor of an inductive coil, the effective resistance, and bandwidth
Answer» E.
Discussion
6.

A circuit tuned to a frequency of 1.5 MHz and having an effective capacitance of 150 pF. In this circuit, the current falls to 70.7 % of its resonant value. The deviates from the resonant frequency are 5 kHz. Effective resistance of the circuit is?

A. 2
B. 3
C. 5.5
D. 4.7
Answer» E.
Discussion
7.

In a Q Meter, the values of tuning capacitor are C3 and C4 for resonant frequencies f3 and 2f4 respectively. The value of distributed capacitance is?

A. ( frac{C_3-C_4}{2} )
B. ( frac{C_3-2C_4}{3} )
C. ( frac{C_3-4C_4}{3} )
D. ( frac{C_3-3C_4}{2} )
Answer» D. ( frac{C_3-3C_4}{2} )
Discussion