Bharat Sanchar Nigam Ltd Question-Paper Contributed by Admin updated on Jun 2020
• Apply to Premium Jobs from Top MNCs
• Priority Shortlisting & Call-letters for drives
Apply to Premium Jobs from Top MNCs
Priority Shortlisting & Call-letters for drives
Access of Complete Question and Solution of the Test Series
Take Test Now
|   4365

BSNL GE JTO-Recruitment Examination

Test Paper -VIII

•  When a inductive coil connected to a 200 V, 50Hz ac supply with 10A current flowing through it dissipates 1000 watts then which of the following will have least value in ohms-

a.) Resistance

b.)  Reactance

c.) Impedance

d.) None

•  Oscillator crystal are made of –

a.) Silicon

b.) Germanium

c.) Quartz

d.) None

•  For small size, high frequency coils, the most common core material is-

a. )Air

b. )Ferrite

c.) Powdered ion

d.) Steel

•  If we have a parallel plate capacitor of plate area 'A' and plate separatoin t and having a capacity C and a metallic plate r of area A and of negligible thickness is introduced in the capacitor at a distance   from either of the two plates as shown in the given figure then the capacity of the capacitor will become –

a.)

b.) C

c.) 2C

d.) 4C

•  A superconductor is a –

a.) A material showing perfect conductivity and Meissner effect below a critical temperature

b.) A conductor having zero resistance

c.) A perfect conductor with highest di-magnetic susceptibility

d.) A perfect conductor which becomes resistance when the current density through it exceeds a critical value

•  When an inductor tunes at 200 KHz with 624 pF capacitor and at 600 KHz with 60.4 pF capacitor then the self capacitance of the inductor would be –

a) 8.05 pF

b) 10.05pF

c.) 16.01pF

d.) 20.01pF

•  Sparking occur when a load is switched off because the circuit has high –

a.) Inductance

b.) Capacitance

c.) Resistance

d.) None

•  Sparking between contacts can be reduced by inserting a –

a.) Resistance in the line

b.) Capacitor in series with contacts

c.) Capacitor in parallel with contacts

d.) None

•  RF amplifier of an A.M. receiver is normally biased in –

a.) Class 'A'

b.) Class 'b'

c.) Class 'C'

d.) None

•  The value of gate voltage for the operation of enhancement of only N channel MOSFET has to be –

a.) High positive

b.) High negative

c.) Low positive

d.) Zero

•  The input gate current of a FET is –

a.) a few microamperes

b.) negligibly small

c.) a few milliamperes

d.) a few amperes

•  In the following fig. with R = 30k, the value of current through 2 K resistor is –

a.) 25 mA

b.) 40 mA

c.) 25/16 mA

d.) 10 mA

•  A step recovery diode –

a.) has on extremely short recovery time

b.) conducts equally well in both directions

c.) is mainly used as a harmonic generator

d.) is an ideal rectifiers of high frequency signals

•  In order to get maximum undistorted output signal from CE amplifier with VCC 10V, the value of VCE (Q) should be approximately-

a.) 0.1V

b.) 5V

c.) 10V

d)