41

42:

43.

ॐ

47.

48.

Multiple trace ബേ be accomplished in a CRO with :
(ಹಿ) Horzontal deflection system (8) Compensation adjustment
(C) Dual ‏سوعط‎ CRT (D) Vertical deflection system

In an electronic ohm meter, the OP-AMP is used as a :
(ಗೆ) summer - (B) differentiator
(൫) integrater ۹ (D) buffer सलः

In order to reduce the loading effect of the circuit under test, the input impedance of an
electronic meter should be :

(ಡಿ) 10% (B) 880
(0 medium (D) constant

Electronic volt meters are more accurate for high resistance circuits as compared to ordinary
voltmeter because of its :

(A) high volt/ohm rating (B) high ohm/volt rating
(() high resolution (D) high output impedance

If the duty cyele of a pulse waveform clamped around zero is 0.5, What is its crest factor?
(#) 2.22 © 8
(0 31 D) 19

ங்‌

A digital power factor meter converts pf into frequency and is counted. If the peak stepped
down voltage is 2V, CT ratio 1:40 and rectifier gain is 1. What would be the frequency for
0.85 pf?

(&) 21.65 प्रय ध (B) 43.33Hz
ര 5l44Hz (D) 30.5Hz

The voltage sensitivity of a multi meter is 20mV. Its internal resistance is 40 ohm. Then its
current sensitivity is :

(ಹ) 2 milli ampere (B) 5 micro ampere

(0) 500 micro ampere M) 08A

A digital phase meter with ZCD is fed with 2 sinusoidal voltages of the same amplitude and
frequency but with a phase displacement. If the time delay with them is 0.15 msec and their
time periods are 1.5 msec, what is the measured phase difference :

(4) 36.86 (8) 45°
(C) 85°46' ൬) 180°

225/2015 8 A