Vyapam Sub Engineer Electrical and Electornics Paper 8th July 2017 Shift I

Vyapam Sub Engineer Electrical and Electornics Paper 8th July 2017 Shift I

In a GTO, anode current begins to fall when gate current __________
(a) is negative peak at time t=0
(b) is negative peak at t=storage period ts
(c) is negative peak at t=(ts+fall time)
(d) just begins to become negative at t=0

Ans- (b)

Electrically graded aluminium has a purity of _________
(a) 98%
(b) 99.5%
(c) 93.9%
(d) 97.5%

Ans- (b)

Electrode used for welding aluminum alloys is __________
(a) tungsten
(b) chromium
(c) cadmium
(d) hard drawn

Ans- (d)

Name the instrument used for waveform analysis, signal frequency measurement and peak to peak voltage measurement.
(a) CRO
(b) Voltmeter
(c) Megger
(d) Multimeter

Ans- (a)

Name the tool which is used to measure the current in any electronic circuit.
(a) DSO
(b) Ammeter
(c) CRO
(d) Voltmeter

Ans- (b)

Give an example of active electronic component
(a) Transistor
(b) Resistor
(c) Diode
(d) Capacitor

Ans- (a)

A crystal oscillator generates electrical oscillation of constant frequency based on the __________ effect
(a) ultrasonic
(b) magnetic
(c) piezoelectric
(d) photoelectric

Ans- (c)

Identify the 4-bit microprocessor from the following list
(a) Intel 8085
(b) Intel 4010
(c) Intel 4004
(d) Intel 8086

Ans- (c)

In _____________ sequential circuits, signals can affect the memory elements only at discrete instants of time
(a) synchronous
(b) asynchronous
(c) combinational
(d) None of the above

Ans- (a)

Butt welding requires a voltage that ranges from ____________
(a) 2 to 8 V
(b) 8 to 16 V
(c) 16 to 24 V
(d) 24 to 32 V

Ans- (a)